--- a/dialogs/UriEditor.py	Wed Dec 19 10:53:19 2018 +0100
+++ b/dialogs/UriEditor.py	Fri Dec 21 13:39:41 2018 +0100
@@ -55,6 +55,7 @@
             self.UriTypeChoice.SetStringSelection(scheme)
         else:
             self.UriTypeChoice.SetSelection(0)
+            scheme = None
 
         self._replaceSchemeEditor(scheme)