diff --git a/web/map.js b/web/map.js
index cfd08f8e..82677fc3 100644
--- a/web/map.js
+++ b/web/map.js
@@ -419,7 +419,7 @@ DynMap.prototype = {
 			popup.popupTime = now.getTime();
 			if (!popup.infoWindow) {
 				popup.infoWindow = new google.maps.InfoWindow({
-					disableAutoPan: !me.options.focuschatballoons || false,
+					disableAutoPan: !(me.options.focuschatballoons || false),
 				    content: htmlMessage
 				});
 			} else {