--- a/makefile
+++ b/makefile
@@ -83,4 +83,4 @@
 	@echo $(LISTING)
 
 clean:
-	rm -f a.out *.o *.obj maketab maketab.exe *.bb *.bbg *.da *.gcov *.gcno *.gcda # proctab.c
+	rm -f a.out *.o *.obj maketab maketab.exe proctab.c ytab.c ytab.h
