diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
index 82ca5fbb..3a7076a2 100644
--- a/gui/qt/main_window.py
+++ b/gui/qt/main_window.py
@@ -779,7 +779,7 @@ class ElectrumWindow(QMainWindow):
                 self.funds_error = True
                 text = _( "Not enough funds" )
                 c, u = self.wallet.get_frozen_balance()
-                if c+u: text += ' (' + self.format_amount(c+u).strip() + self.base_unit() + ' ' +_("are frozen") + ')'
+                if c+u: text += ' (' + self.format_amount(c+u).strip() + ' ' + self.base_unit() + ' ' +_("are frozen") + ')'
 
             self.statusBar().showMessage(text)
             self.amount_e.setPalette(palette)