diff --git a/src/core/gui.coffee b/src/core/gui.coffee
index 57c3172..e21e95f 100644
--- a/src/core/gui.coffee
+++ b/src/core/gui.coffee
@@ -163,7 +163,7 @@ self.OS.GUI =
             return document.exitFullscreen() if document.exitFullscreen
             return document.mozCancelFullScreen() if document.mozCancelFullScreen
             return document.webkitExitFullscreen() if document.webkitExitFullscreen
-            return document.exitFullscreen() if document.exitFullscreen
+            return document.cancelFullScreen() if document.cancelFullScreen
         else
             return el.requestFullscreen() if el.requestFullscreen
             return el.mozRequestFullScreen() if el.mozRequestFullScreen