diff --git a/syncplay/ui/GuiConfiguration.py b/syncplay/ui/GuiConfiguration.py
index 6e55776..dc2db7e 100644
--- a/syncplay/ui/GuiConfiguration.py
+++ b/syncplay/ui/GuiConfiguration.py
@@ -71,6 +71,9 @@ class ConfigDialog(QtGui.QDialog):
         self.QtGui.QDesktopServices.openUrl("http://syncplay.pl/guide/client/")
 
     def _isURL(self, path):
+        if path is None:
+            return False
+
         if "http://" in path:
             return True