diff --git a/Makefile.in b/Makefile.in
index eaabcd39d..ee430b370 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -1,7 +1,7 @@
 #
 # SPDX-License-Identifier: ISC
 #
-# Copyright (c) 2010-2015, 2017-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+# Copyright (c) 2010-2015, 2017-2021 Todd C. Miller <Todd.Miller@sudo.ws>
 #
 # Permission to use, copy, modify, and distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above
@@ -110,7 +110,7 @@ all: config.status
 	    exit $$?; \
 	done
 
-check check-fuzzer pre-install: config.status
+check check-fuzzer fuzz pre-install: config.status
 	for d in $(SUBDIRS); do \
 	    (cd $$d && exec $(MAKE) $@) && continue; \
 	    exit $$?; \
diff --git a/doc/Makefile.in b/doc/Makefile.in
index 54dee9b70..a6efcca3d 100644
--- a/doc/Makefile.in
+++ b/doc/Makefile.in
@@ -406,6 +406,8 @@ pvs-log-files:
 
 pvs-studio:
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/examples/Makefile.in b/examples/Makefile.in
index 10d0740c5..823655d79 100644
--- a/examples/Makefile.in
+++ b/examples/Makefile.in
@@ -104,6 +104,8 @@ pvs-log-files:
 
 pvs-studio:
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/include/Makefile.in b/include/Makefile.in
index 3561c8fca..fcddad418 100644
--- a/include/Makefile.in
+++ b/include/Makefile.in
@@ -90,6 +90,8 @@ pvs-log-files:
 
 pvs-studio:
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/lib/eventlog/Makefile.in b/lib/eventlog/Makefile.in
index 25bdb73df..7f62355d4 100644
--- a/lib/eventlog/Makefile.in
+++ b/lib/eventlog/Makefile.in
@@ -146,6 +146,8 @@ cppcheck:
 
 pvs-log-files: $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: $(TEST_PROGS) check-fuzzer
diff --git a/lib/fuzzstub/Makefile.in b/lib/fuzzstub/Makefile.in
index 07b095bfe..5f6ad0c2b 100644
--- a/lib/fuzzstub/Makefile.in
+++ b/lib/fuzzstub/Makefile.in
@@ -139,6 +139,8 @@ cppcheck:
 
 pvs-log-files: $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/lib/iolog/Makefile.in b/lib/iolog/Makefile.in
index 4f19563fd..1b35f8cf8 100644
--- a/lib/iolog/Makefile.in
+++ b/lib/iolog/Makefile.in
@@ -87,6 +87,8 @@ FUZZ_PROGS = fuzz_iolog_json fuzz_iolog_legacy fuzz_iolog_timing
 FUZZ_SEED_CORPUS = ${FUZZ_PROGS:=_seed_corpus.zip}
 FUZZ_LIBS = @LIBS@ $(LIB_FUZZING_ENGINE)
 FUZZ_LDFLAGS = @LDFLAGS@
+FUZZ_MAX_LEN = 4096
+FUZZ_RUNS = 8192
 
 # Set to non-empty for development mode
 DEVEL = @DEVEL@
@@ -191,6 +193,23 @@ fuzz_iolog_json_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_iolog_json: fuzz_iolog_json
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/iolog_json; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_IOLOG_JSON_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_iolog_json -dict=$(srcdir)/regress/fuzz/fuzz_iolog_json.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 fuzz_iolog_legacy_seed_corpus.zip:
 	tdir=fuzz_iolog_legacy.$$$$; \
 	mkdir $$tdir; \
@@ -200,6 +219,23 @@ fuzz_iolog_legacy_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_iolog_legacy: fuzz_iolog_legacy
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/iolog_legacy; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_IOLOG_LEGACY_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_iolog_legacy -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 fuzz_iolog_timing_seed_corpus.zip:
 	tdir=fuzz_iolog_timing.$$$$; \
 	mkdir $$tdir; \
@@ -209,6 +245,23 @@ fuzz_iolog_timing_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_iolog_timing: fuzz_iolog_timing
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/iolog_timing; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_IOLOG_TIMING_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_iolog_timing -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 pre-install:
 
 install:
@@ -239,6 +292,8 @@ cppcheck:
 
 pvs-log-files: $(POBJS)
 
+fuzz: run-fuzz_iolog_json run-fuzz_iolog_legacy run-fuzz_iolog_timing
+
 check-fuzzer: $(FUZZ_PROGS)
 	@if test X"$(cross_compiling)" != X"yes"; then \
 	    if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
@@ -280,7 +335,8 @@ clean:
 	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f $(TEST_PROGS) $(FUZZ_PROGS) \
 	    *.lo *.o *.la
 	-rm -f *.i *.plog stamp-* core *.core core.* regress/*/*.out \
-	    regress/*/*.err
+	    regress/*/*.err regress/corpus/iolog_json \
+	    regress/corpus/iolog_legacy regress/corpus/iolog_timing
 
 mostlyclean: clean
 
@@ -294,7 +350,9 @@ realclean: distclean
 
 cleandir: realclean
 
-.PHONY: clean mostlyclean distclean cleandir clobber realclean $(FUZZ_SEED_CORPUS)
+.PHONY: clean mostlyclean distclean cleandir clobber realclean \
+	$(FUZZ_SEED_CORPUS) run-fuzz_iolog_json run-fuzz_iolog_legacy \
+	run-fuzz_iolog_timing
 
 # Autogenerated dependencies, do not modify
 check_iolog_json.lo: $(srcdir)/regress/iolog_json/check_iolog_json.c \
diff --git a/lib/logsrv/Makefile.in b/lib/logsrv/Makefile.in
index cd21a34ea..9e714e400 100644
--- a/lib/logsrv/Makefile.in
+++ b/lib/logsrv/Makefile.in
@@ -148,6 +148,8 @@ cppcheck:
 
 pvs-log-files: $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/lib/util/Makefile.in b/lib/util/Makefile.in
index 713a00fc9..1c713f96f 100644
--- a/lib/util/Makefile.in
+++ b/lib/util/Makefile.in
@@ -1,7 +1,7 @@
 #
 # SPDX-License-Identifier: ISC
 #
-# Copyright (c) 2011-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+# Copyright (c) 2011-2021 Todd C. Miller <Todd.Miller@sudo.ws>
 #
 # Permission to use, copy, modify, and distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above
@@ -116,6 +116,8 @@ FUZZ_PROGS = fuzz_sudo_conf
 FUZZ_SEED_CORPUS = ${FUZZ_PROGS:=_seed_corpus.zip}
 FUZZ_LIBS = @LIBS@ $(LIB_FUZZING_ENGINE)
 FUZZ_LDFLAGS = @LDFLAGS@
+FUZZ_MAX_LEN = 4096
+FUZZ_RUNS = 8192
 
 # User and group ids the installed files should be "owned" by
 install_uid = 0
@@ -303,6 +305,23 @@ fuzz_sudo_conf_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_sudo_conf: fuzz_sudo_conf
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/sudo_conf; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_SUDO_CONF_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_sudo_conf -dict=$(srcdir)/regress/fuzz/fuzz_sudo_conf.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 pre-install:
 
 install: install-dirs
@@ -345,6 +364,8 @@ cppcheck:
 
 pvs-log-files: $(POBJS)
 
+fuzz: run-fuzz_sudo_conf
+
 check-fuzzer: $(FUZZ_PROGS)
 	@if test X"$(cross_compiling)" != X"yes"; then \
 	    if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
@@ -465,6 +486,7 @@ clean:
 	    *.lo *.o *.la
 	-rm -f *.i *.plog stamp-* core *.core core.* regress/*/*.out \
 	    regress/*/*.err
+	-rm -rf regress/corpus/sudo_conf
 
 mostlyclean: clean
 
@@ -479,7 +501,8 @@ realclean: distclean
 
 cleandir: realclean
 
-.PHONY: clean mostlyclean distclean cleandir clobber realclean $(FUZZ_SEED_CORPUS)
+.PHONY: clean mostlyclean distclean cleandir clobber realclean \
+	$(FUZZ_SEED_CORPUS) run-fuzz_sudo_conf
 
 # Autogenerated dependencies, do not modify
 aix.lo: $(srcdir)/aix.c $(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
diff --git a/lib/zlib/Makefile.in b/lib/zlib/Makefile.in
index 335f44e93..828486d93 100644
--- a/lib/zlib/Makefile.in
+++ b/lib/zlib/Makefile.in
@@ -161,6 +161,8 @@ pvs-log-files:
 
 pvs-studio:
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/logsrvd/Makefile.in b/logsrvd/Makefile.in
index a153ad20e..a001001b2 100644
--- a/logsrvd/Makefile.in
+++ b/logsrvd/Makefile.in
@@ -1,7 +1,7 @@
 #
 # SPDX-License-Identifier: ISC
 #
-# Copyright (c) 2019-2020 Todd C. Miller <Todd.Miller@sudo.ws>
+# Copyright (c) 2019-2021 Todd C. Miller <Todd.Miller@sudo.ws>
 #
 # Permission to use, copy, modify, and distribute this software for any
 # purpose with or without fee is hereby granted, provided that the above
@@ -106,6 +106,8 @@ FUZZ_PROGS = fuzz_logsrvd_conf
 FUZZ_SEED_CORPUS = ${FUZZ_PROGS:=_seed_corpus.zip}
 FUZZ_LIBS = $(LIBS) $(LIB_FUZZING_ENGINE)
 FUZZ_LDFLAGS = $(LDFLAGS)
+FUZZ_MAX_LEN = 4096
+FUZZ_RUNS = 8192
 
 # User and group IDs the installed files should be "owned" by
 install_uid = 0
@@ -175,6 +177,23 @@ fuzz_logsrvd_conf_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_logsrvd_conf: fuzz_logsrvd_conf
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/logsrvd_conf; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_LOGSRVD_CONF_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_logsrvd_conf -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 pre-install:
 
 install: install-binaries
@@ -217,6 +236,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz: run-fuzz_logsrvd_conf
+
 check-fuzzer: $(FUZZ_PROGS)
 	@if test X"$(cross_compiling)" != X"yes"; then \
 	    if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
@@ -237,6 +258,7 @@ clean:
 	-$(LIBTOOL) $(LTFLAGS) --mode=clean rm -f $(PROGS) $(FUZZ_PROGS) \
 	    *.lo *.o *.la
 	-rm -f *.i *.plog stamp-* core *.core core.*
+	-rm -rf regress/corpus/logsrvd_conf
 
 mostlyclean: clean
 
@@ -250,7 +272,8 @@ realclean: distclean
 
 cleandir: realclean
 
-.PHONY: clean mostlyclean distclean cleandir clobber realclean $(FUZZ_SEED_CORPUS)
+.PHONY: clean mostlyclean distclean cleandir clobber realclean \
+	$(FUZZ_SEED_CORPUS) run-fuzz_logsrvd_conf
 
 # Autogenerated dependencies, do not modify
 fuzz_logsrvd_conf.o: $(srcdir)/regress/fuzz/fuzz_logsrvd_conf.c \
diff --git a/plugins/audit_json/Makefile.in b/plugins/audit_json/Makefile.in
index 02377b3a6..8d0357fc8 100644
--- a/plugins/audit_json/Makefile.in
+++ b/plugins/audit_json/Makefile.in
@@ -181,6 +181,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/plugins/group_file/Makefile.in b/plugins/group_file/Makefile.in
index 60337e788..0f86c5fe5 100644
--- a/plugins/group_file/Makefile.in
+++ b/plugins/group_file/Makefile.in
@@ -184,6 +184,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/plugins/python/Makefile.in b/plugins/python/Makefile.in
index b1cea6cf9..b46fdf7af 100644
--- a/plugins/python/Makefile.in
+++ b/plugins/python/Makefile.in
@@ -220,6 +220,8 @@ realclean: distclean
 
 cleandir: realclean
 
+fuzz:
+
 check-fuzzer:
 
 check: $(TEST_PROGS) check-fuzzer
diff --git a/plugins/sample/Makefile.in b/plugins/sample/Makefile.in
index e2109217e..a27e57103 100644
--- a/plugins/sample/Makefile.in
+++ b/plugins/sample/Makefile.in
@@ -179,6 +179,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/plugins/sample_approval/Makefile.in b/plugins/sample_approval/Makefile.in
index 7aed9d887..15485b18a 100644
--- a/plugins/sample_approval/Makefile.in
+++ b/plugins/sample_approval/Makefile.in
@@ -181,6 +181,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/plugins/sudoers/Makefile.in b/plugins/sudoers/Makefile.in
index dcb33fbe2..b98d82770 100644
--- a/plugins/sudoers/Makefile.in
+++ b/plugins/sudoers/Makefile.in
@@ -165,6 +165,8 @@ FUZZ_PROGS = fuzz_policy fuzz_sudoers fuzz_sudoers_ldif
 FUZZ_SEED_CORPUS = ${FUZZ_PROGS:=_seed_corpus.zip}
 FUZZ_LIBS = libparsesudoers.la @SUDOERS_LIBS@ $(LIB_FUZZING_ENGINE)
 FUZZ_LDFLAGS = @LDFLAGS@
+FUZZ_MAX_LEN = 4096
+FUZZ_RUNS = 8192
 
 AUTH_OBJS = sudo_auth.lo @AUTH_OBJS@
 
@@ -404,6 +406,23 @@ fuzz_policy_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_policy: fuzz_policy
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/policy; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_POLICY_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_policy -dict=$(srcdir)/regress/fuzz/fuzz_policy.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 fuzz_sudoers_seed_corpus.zip:
 	tdir=fuzz_sudoers.$$$$; \
 	mkdir $$tdir; \
@@ -413,6 +432,23 @@ fuzz_sudoers_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_sudoers: fuzz_sudoers
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/sudoers; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_SUDOERS_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_sudoers -dict=$(srcdir)/regress/fuzz/fuzz_sudoers.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 fuzz_sudoers_ldif_seed_corpus.zip:
 	tdir=fuzz_sudoers_ldif.$$$$; \
 	mkdir $$tdir; \
@@ -422,6 +458,23 @@ fuzz_sudoers_ldif_seed_corpus.zip:
 	zip -j $@ $$tdir/*; \
 	rm -rf $$tdir
 
+run-fuzz_sudoers_ldif: fuzz_sudoers_ldif
+	if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
+	    LC_ALL=C.UTF-8; export LC_ALL; \
+	else \
+	    LC_ALL=C; export LC_ALL; \
+	fi; \
+	unset LANG || LANG=; \
+	MALLOC_OPTIONS=S; export MALLOC_OPTIONS; \
+	MALLOC_CONF="abort:true,junk:true"; export MALLOC_CONF; \
+	umask 022; \
+	corpus=regress/corpus/sudoers_ldif; \
+	mkdir -p $$corpus; \
+	for f in $(FUZZ_SUDOERS_LDIF_CORPUS); do \
+	    cp $$f $$corpus; \
+	done; \
+	./fuzz_sudoers_ldif -dict=$(srcdir)/regress/fuzz/fuzz_sudoers_ldif.dict -max_len=$(FUZZ_MAX_LEN) -runs=$(FUZZ_RUNS) $$corpus
+
 GENERATED = gram.h gram.c toke.c def_data.c def_data.h getdate.c
 
 prologue:
@@ -551,6 +604,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz: run-fuzz_policy run-fuzz_sudoers run-fuzz_sudoers_ldif
+
 check-fuzzer: $(FUZZ_PROGS)
 	@if test X"$(cross_compiling)" != X"yes"; then \
 	    if locale -a 2>&1 | grep '^C.UTF-8$$' >/dev/null 2>&1; then \
@@ -741,7 +796,8 @@ clean:
 	-rm -f *.i *.plog stamp-* core *.core core.* prologue regress/*/*.out \
 	    regress/*/*.toke regress/*/*.err regress/*/*.json \
 	    regress/*/*.ldif regress/*/*.ldif2sudo regress/*/*.sudo
-	-rm -rf regress/iolog_plugin/iolog
+	-rm -rf regress/iolog_plugin/iolog regress/corpus/policy \
+	    regress/corpus/sudoers regress/corpus/sudoers_ldif
 
 mostlyclean: clean
 
@@ -759,7 +815,9 @@ realclean: distclean
 
 cleandir: realclean
 
-.PHONY: clean mostlyclean distclean cleandir clobber realclean $(FUZZ_SEED_CORPUS)
+.PHONY: clean mostlyclean distclean cleandir clobber realclean \
+	$(FUZZ_SEED_CORPUS) run-fuzz_policy run-fuzz_sudoers \
+	run-fuzz_sudoers_ldif
 
 # Autogenerated dependencies, do not modify
 afs.lo: $(authdir)/afs.c $(authdir)/sudo_auth.h $(devdir)/def_data.h \
diff --git a/plugins/system_group/Makefile.in b/plugins/system_group/Makefile.in
index 161da8384..c570bf1dd 100644
--- a/plugins/system_group/Makefile.in
+++ b/plugins/system_group/Makefile.in
@@ -184,6 +184,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: check-fuzzer
diff --git a/src/Makefile.in b/src/Makefile.in
index d85c598d9..80574f674 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -265,6 +265,8 @@ pvs-log-files: $(POBJS)
 pvs-studio: $(POBJS)
 	plog-converter $(PVS_LOG_OPTS) $(POBJS)
 
+fuzz:
+
 check-fuzzer:
 
 check: $(TEST_PROGS) check-fuzzer