diff --git a/gnu/usr.bin/binutils/gdb/Makefile b/gnu/usr.bin/binutils/gdb/Makefile
index 32f07868b21e..70f0e0c0de74 100644
--- a/gnu/usr.bin/binutils/gdb/Makefile
+++ b/gnu/usr.bin/binutils/gdb/Makefile
@@ -1,5 +1,6 @@
 PROG = gdb
 BINDIR= /usr/bin
+CLEANFILES+= y.tab.h c-exp.tab.c ch-exp.tab.c m2-exp.tab.c
 SRCS = main.c blockframe.c breakpoint.c findvar.c stack.c thread.c \
        source.c values.c eval.c valops.c valarith.c valprint.c printcmd.c \
        symtab.c symfile.c symmisc.c infcmd.c infrun.c command.c utils.c \
diff --git a/gnu/usr.bin/gdb/gdb/Makefile b/gnu/usr.bin/gdb/gdb/Makefile
index 32f07868b21e..70f0e0c0de74 100644
--- a/gnu/usr.bin/gdb/gdb/Makefile
+++ b/gnu/usr.bin/gdb/gdb/Makefile
@@ -1,5 +1,6 @@
 PROG = gdb
 BINDIR= /usr/bin
+CLEANFILES+= y.tab.h c-exp.tab.c ch-exp.tab.c m2-exp.tab.c
 SRCS = main.c blockframe.c breakpoint.c findvar.c stack.c thread.c \
        source.c values.c eval.c valops.c valarith.c valprint.c printcmd.c \
        symtab.c symfile.c symmisc.c infcmd.c infrun.c command.c utils.c \