diff --git a/gui/gui_classic/transaction_dialog.py b/gui/gui_classic/transaction_dialog.py
index 6f16e67c..b4c34020 100644
--- a/gui/gui_classic/transaction_dialog.py
+++ b/gui/gui_classic/transaction_dialog.py
@@ -68,6 +68,7 @@ class TxDialog(QDialog):
 
         self.io = self.io_widget(tx)
         vbox.addWidget( self.io )
+        vbox.addStretch(1)
 
         buttons = QHBoxLayout()
         vbox.addLayout( buttons )