diff --git a/mods/testmod.js b/mods/testmod.js
index 7689a183..8f7843b4 100644
--- a/mods/testmod.js
+++ b/mods/testmod.js
@@ -2,6 +2,6 @@ elements.HelloWorld = {
     color: "#100D5E",
     behavior: behaviors.WALL,
     category: "land",
-    state:  "solid"
+    state:  "solid",
     density: 720,
 };