diff --git a/MANIFEST b/MANIFEST
index 9a7920a5c..6ce9da93c 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -125,13 +125,13 @@ lib/iolog/regress/corpus/log_json/make.json
 lib/iolog/regress/corpus/log_json/pkg_add.json
 lib/iolog/regress/corpus/log_json/pkg_delete.json
 lib/iolog/regress/corpus/log_json/printenv.json
-lib/iolog/regress/corpus/log_legacy/id
-lib/iolog/regress/corpus/log_legacy/ls
-lib/iolog/regress/corpus/log_legacy/mailq
-lib/iolog/regress/corpus/log_legacy/make
-lib/iolog/regress/corpus/log_legacy/pkg_add
-lib/iolog/regress/corpus/log_legacy/pkg_delete
-lib/iolog/regress/corpus/log_legacy/printenv
+lib/iolog/regress/corpus/log_legacy/id.log
+lib/iolog/regress/corpus/log_legacy/ls.log
+lib/iolog/regress/corpus/log_legacy/mailq.log
+lib/iolog/regress/corpus/log_legacy/make.log
+lib/iolog/regress/corpus/log_legacy/pkg_add.log
+lib/iolog/regress/corpus/log_legacy/pkg_delete.log
+lib/iolog/regress/corpus/log_legacy/printenv.log
 lib/iolog/regress/corpus/timing/timing.1
 lib/iolog/regress/corpus/timing/timing.2
 lib/iolog/regress/corpus/timing/timing.3
diff --git a/lib/iolog/Makefile.in b/lib/iolog/Makefile.in
index 02014f32c..453e3a642 100644
--- a/lib/iolog/Makefile.in
+++ b/lib/iolog/Makefile.in
@@ -195,11 +195,11 @@ pvs-log-files: $(POBJS)
 fuzz: $(FUZZ_PROGS)
 	@if test X"$(cross_compiling)" != X"yes"; then \
 	    echo "fuzz_iolog_legacy: verifying corpus"; \
-	    ./fuzz_iolog_legacy $(srcdir)/regress/corpus/log_legacy/*; \
+	    ./fuzz_iolog_legacy $(srcdir)/regress/corpus/log_legacy/*.log; \
 	    echo "fuzz_iolog_json: verifying corpus"; \
-	    ./fuzz_iolog_json $(srcdir)/regress/corpus/log_json/*; \
+	    ./fuzz_iolog_json $(srcdir)/regress/corpus/log_json/*.json; \
 	    echo "fuzz_iolog_timing: verifying corpus"; \
-	    ./fuzz_iolog_timing $(srcdir)/regress/corpus/timing/*; \
+	    ./fuzz_iolog_timing $(srcdir)/regress/corpus/timing/timing.*; \
 	fi
 
 check: $(TEST_PROGS) fuzz
diff --git a/lib/iolog/regress/corpus/log_legacy/id b/lib/iolog/regress/corpus/log_legacy/id.log
similarity index 100%
rename from lib/iolog/regress/corpus/log_legacy/id
rename to lib/iolog/regress/corpus/log_legacy/id.log
diff --git a/lib/iolog/regress/corpus/log_legacy/ls b/lib/iolog/regress/corpus/log_legacy/ls.log
similarity index 100%
rename from lib/iolog/regress/corpus/log_legacy/ls
rename to lib/iolog/regress/corpus/log_legacy/ls.log
diff --git a/lib/iolog/regress/corpus/log_legacy/mailq b/lib/iolog/regress/corpus/log_legacy/mailq.log
similarity index 100%
rename from lib/iolog/regress/corpus/log_legacy/mailq
rename to lib/iolog/regress/corpus/log_legacy/mailq.log
diff --git a/lib/iolog/regress/corpus/log_legacy/make b/lib/iolog/regress/corpus/log_legacy/make.log
similarity index 100%
rename from lib/iolog/regress/corpus/log_legacy/make
rename to lib/iolog/regress/corpus/log_legacy/make.log
diff --git a/lib/iolog/regress/corpus/log_legacy/pkg_add b/lib/iolog/regress/corpus/log_legacy/pkg_add.log
similarity index 100%
rename from lib/iolog/regress/corpus/log_legacy/pkg_add
rename to lib/iolog/regress/corpus/log_legacy/pkg_add.log
diff --git a/lib/iolog/regress/corpus/log_legacy/pkg_delete b/lib/iolog/regress/corpus/log_legacy/pkg_delete.log
similarity index 100%
rename from lib/iolog/regress/corpus/log_legacy/pkg_delete
rename to lib/iolog/regress/corpus/log_legacy/pkg_delete.log
diff --git a/lib/iolog/regress/corpus/log_legacy/printenv b/lib/iolog/regress/corpus/log_legacy/printenv.log
similarity index 100%
rename from lib/iolog/regress/corpus/log_legacy/printenv
rename to lib/iolog/regress/corpus/log_legacy/printenv.log
diff --git a/plugins/sudoers/Makefile.in b/plugins/sudoers/Makefile.in
index d61253a1b..ca9e8dd6a 100644
--- a/plugins/sudoers/Makefile.in
+++ b/plugins/sudoers/Makefile.in
@@ -490,7 +490,7 @@ fuzz: $(FUZZ_PROGS)
 	    echo "fuzz_sudoers-ldif: verifying corpus"; \
 	    ./fuzz_sudoers_ldif $(srcdir)/regress/sudoers/*.ldif.ok; \
 	    echo "fuzz_policy: verifying corpus"; \
-	    ./fuzz_policy $(srcdir)/regress/corpus/policy/*; \
+	    ./fuzz_policy $(srcdir)/regress/corpus/policy/policy.*; \
 	fi
 
 check: $(TEST_PROGS) visudo testsudoers cvtsudoers fuzz