diff --git a/src/ui/index.tis b/src/ui/index.tis
index 71def3fe7..8954ad8d8 100644
--- a/src/ui/index.tis
+++ b/src/ui/index.tis
@@ -1208,7 +1208,7 @@ function self.onMouse(evt) {
 }
 
 function check_if_overlay() {
-    if (handler.get_option('allow-remote-config-modification') == 'Y') {
+    if (!handler.get_option('allow-remote-config-modification') == 'Y') {
         var time0 = getTime();
         handler.check_mouse_time();
         self.timer(120ms, function() {