diff --git a/gui/gui_classic/__init__.py b/gui/gui_classic/__init__.py
index 471827eec..a7890d6e2 100644
--- a/gui/gui_classic/__init__.py
+++ b/gui/gui_classic/__init__.py
@@ -152,7 +152,8 @@ class ElectrumGui:
                 self.minimize()
         else:
             w.show()
-            self.mini.hide()
+            if self.mini:
+                self.mini.hide()
 
         self.app.exec_()