diff --git a/tests/Make-template b/tests/Make-template
index 7e49ed6c61..4a0adb8678 100644
--- a/tests/Make-template
+++ b/tests/Make-template
@@ -24,7 +24,7 @@ install:	FORCE
 depend:	FORCE
 
 clean:	FORCE
-	$(RM) test-db/[a-z]* test-repl/[a-z]*
+	$(RM) test-db/[^C]* test-repl/[^C]*
 
 veryclean:	clean