diff --git a/plugins/greenaddress_instant/qt.py b/plugins/greenaddress_instant/qt.py
index 93d2bb71..5a01091e 100644
--- a/plugins/greenaddress_instant/qt.py
+++ b/plugins/greenaddress_instant/qt.py
@@ -64,7 +64,7 @@ class Plugin(BasePlugin):
     def do_verify(self, d):
         tx = d.tx
         wallet = d.wallet
-        window = d.parent
+        window = d.main_window
         # 1. get the password and sign the verification request
         password = None
         if wallet.has_password():