diff --git a/gui/qt/amountedit.py b/gui/qt/amountedit.py
index f9e939b0..dcb14aad 100644
--- a/gui/qt/amountedit.py
+++ b/gui/qt/amountedit.py
@@ -18,6 +18,8 @@ class AmountEdit(MyLineEdit):
 
     def __init__(self, base_unit, is_int = False, parent=None):
         QLineEdit.__init__(self, parent)
+        # This seems sufficient for hundred-BTC amounts with 8 decimals
+        self.setFixedWidth(140)
         self.base_unit = base_unit
         self.textChanged.connect(self.numbify)
         self.is_int = is_int