diff --git a/EDMarketConnector.py b/EDMarketConnector.py
index 1b45225a..54d84ef8 100755
--- a/EDMarketConnector.py
+++ b/EDMarketConnector.py
@@ -754,7 +754,7 @@ class AppWindow:
         config.delete('username', suppress=True)
         config.delete('password', suppress=True)
         config.delete('logdir', suppress=True)
-        self.postprefs(False)  # Companion login happens in callback from monitor
+        self.w.after_idle(lambda: self.postprefs(False))  # Companion login happens in callback from monitor
         self.toggle_suit_row(visible=False)
         if args.start_min:
             logger.warning("Trying to start minimized")