diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
index 5fd473af..0cbfde85 100644
--- a/gui/qt/main_window.py
+++ b/gui/qt/main_window.py
@@ -2201,7 +2201,7 @@ class ElectrumWindow(QMainWindow):
         try:
             for position, row in enumerate(csvReader):
                 address = row[0]
-                if not is_address(address):
+                if not bitcoin.is_address(address):
                     errors.append((position, address))
                     continue
                 amount = Decimal(row[1])