diff --git a/lang/cem/lint/lpass2/proto.make b/lang/cem/lint/lpass2/proto.make
index b71d4e263..5a9120480 100644
--- a/lang/cem/lint/lpass2/proto.make
+++ b/lang/cem/lint/lpass2/proto.make
@@ -63,7 +63,7 @@ tags:	$(SRC)
 	ctags $(SRC)
 
 clean:
-	rm -f a.out core next.c inpdef.h *.$(SUF) lint.exec
+	rm -f a.out core next.c inpdef.h *.$(SUF) lint.exec lpass2
 
 lint:	inpdef.h next.c
 	$(LINT) $(LINTFLAGS) $(SRC) next.c