diff --git a/tests/Make-template b/tests/Make-template
index 7e6be68593..46675972d7 100644
--- a/tests/Make-template
+++ b/tests/Make-template
@@ -26,7 +26,7 @@ install:	FORCE
 depend:	FORCE
 
 clean:	FORCE
-	$(RM) test-db/[!C]* test-repl/[!C]*
+	$(RM) test-db/[!C]* test-repl/[!C]* *core
 
 veryclean:	clean