diff --git a/src/ca65/make/gcc.mak b/src/ca65/make/gcc.mak
index 897b09cb2..2a36c017c 100644
--- a/src/ca65/make/gcc.mak
+++ b/src/ca65/make/gcc.mak
@@ -90,7 +90,7 @@ clean:
 	rm -f *~ core *.lst
 
 zap:	clean
-	rm -f *.o $(EXECS) .depend
+	rm -f *.o $(EXECS) $(INCS) .depend
 
 # ------------------------------------------------------------------------------
 # Make the dependencies