diff --git a/js/Constants.js b/js/Constants.js
index d4561db1..231dfb5b 100644
--- a/js/Constants.js
+++ b/js/Constants.js
@@ -31,5 +31,5 @@ var Constants = {
     GRID_STROKE_COLOR: "lightgray",
 
     LEFT_BUTTON : "left_button_1",
-    RIGHT_BUTTON : "right_button_2",
+    RIGHT_BUTTON : "right_button_2"
 };
\ No newline at end of file