diff --git a/tools/build.sh b/tools/build.sh
index 16104923f..3bb3859bc 100644
--- a/tools/build.sh
+++ b/tools/build.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 
-# builds the game in the root folder
-webpack --mode $1
+# builds the game in the root folder, exit on failure
+webpack --mode $1 || exit 1
 
 # Clear out any files remaining from old builds and recreate folder
 rm -rf .app