diff --git a/gnu/usr.bin/cvs/lib/Makefile b/gnu/usr.bin/cvs/lib/Makefile
index 3c68ed5530a6..5233869b573b 100644
--- a/gnu/usr.bin/cvs/lib/Makefile
+++ b/gnu/usr.bin/cvs/lib/Makefile
@@ -5,7 +5,7 @@ CFLAGS += -I${.CURDIR} -I${.CURDIR}/../cvs -DFTIME_MISSING -DHAVE_TIMEZONE
 SRCS =	argmatch.c error.c getopt.c sighandle.c strippath.c stripslash.c yesno.c \
 	getdate.y fnmatch.c regex.c subr.c myndbm.c hash.c
 
-CLEANFILES+= getdate.c
+CLEANFILES+= getdate.c y.tab.h
 
 install:
 	@echo -n