diff --git a/electrum/gui/qml/components/controls/BtcField.qml b/electrum/gui/qml/components/controls/BtcField.qml
index 04f296782..fca0455fd 100644
--- a/electrum/gui/qml/components/controls/BtcField.qml
+++ b/electrum/gui/qml/components/controls/BtcField.qml
@@ -32,5 +32,5 @@ TextField {
         }
     }
 
-    Component.onCompleted: textAsSats = Config.unitsToSats('')
+    Component.onCompleted: amount.textChanged()
 }
diff --git a/electrum/gui/qml/qeinvoice.py b/electrum/gui/qml/qeinvoice.py
index a5165067e..2c692a20b 100644
--- a/electrum/gui/qml/qeinvoice.py
+++ b/electrum/gui/qml/qeinvoice.py
@@ -155,7 +155,7 @@ class QEInvoice(QObject, QtEventListener):
         return self._amountOverride
 
     @amountOverride.setter
-    def amountOverride(self, new_amount):
+    def amountOverride(self, new_amount: QEAmount):
         self._logger.debug(f'set new override amount {repr(new_amount)}')
         self._amountOverride.copyFrom(new_amount)
         self.amountOverrideChanged.emit()