diff --git a/Makefile b/Makefile
index de65487e4f..ff9dd6d345 100644
--- a/Makefile
+++ b/Makefile
@@ -2,3 +2,5 @@ all:
 	java -jar plovr.jar serve main.json
 build:
 	java -jar plovr.jar build main.json > index.js
+
+.PHONY: build
\ No newline at end of file