diff --git a/Makefile.in b/Makefile.in
index dec276840..ccd7f2981 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -119,7 +119,8 @@ AUTH_SRCS = auth/afs.c auth/aix_auth.c auth/bsdauth.c auth/dce.c auth/fwtk.c \
 HDRS = compat.h def_data.h defaults.h error.h ins_2001.h ins_classic.h \
        ins_csops.h ins_goons.h insults.h interfaces.h lbuf.h list.h \
        logging.h parse.h sudo.h sudo_nss.h gram.h version.h auth/sudo_auth.h \
-       emul/fnmatch.h emul/glob.h emul/timespec.h emul/utime.h redblack.h
+       emul/charclass.h emul/fnmatch.h emul/glob.h emul/timespec.h \
+       emul/utime.h redblack.h
 
 AUTH_OBJS = sudo_auth.o @AUTH_OBJS@