diff --git a/src/classes/gamepadinput.js b/src/classes/gamepadinput.js
index 919e1d4..11a16cc 100644
--- a/src/classes/gamepadinput.js
+++ b/src/classes/gamepadinput.js
@@ -48,7 +48,7 @@ class GamepadInput {
         self._gamepadState = {};
         self.gamepadIds = [];
 
-        if (!('ongamepadconnected' in window)) {
+        if (!("ongamepadconnected" in window)) {
 
             let pollGamepads = function () {