diff --git a/build/Makefile b/build/Makefile
index 97ad517..7791c60 100644
--- a/build/Makefile
+++ b/build/Makefile
@@ -49,5 +49,5 @@ copy: $(XML_FILE) $(HTML_FILE)
 
 clean:
 	rm -fr $(TS_BUILD)
-	rm -f $(HTML_FILE) $(XML_FILE) bundle.js index.html main.css
+	rm -f $(HTML_FILE) $(XML_FILE) bundle.js index.html main.css local.js