diff --git a/Makefile b/Makefile
index d46a5c7..7d70739 100644
--- a/Makefile
+++ b/Makefile
@@ -15,4 +15,4 @@ clean:
 	find . -name '*.cf' -exec rm -r {} \;
 	find . -name '*.ghw' -exec rm -r {} \;
 	find . -name '*.entity' -exec rm -r {} \;
-	find . -name $(PARTS) -exec rm -r {} \;
+	find . -name $(PARTS)_tb -exec rm -r {} \;