diff --git a/src/mainwindow.h b/src/mainwindow.h
index c789081..409df82 100644
--- a/src/mainwindow.h
+++ b/src/mainwindow.h
@@ -92,7 +92,7 @@ private:
 
     void restoreSavedStates();
 
-    QString addressFromAddressField(const QString& lblAddr) { return lblAddr.split("/").last(); }
+    QString addressFromAddressField(const QString& lblAddr) { return lblAddr.trimmed().split("/").last(); }
 
     RPC*         rpc  = nullptr;
     QCompleter*  labelCompleter = nullptr;
diff --git a/src/sendtab.cpp b/src/sendtab.cpp
index c804f05..01475bb 100644
--- a/src/sendtab.cpp
+++ b/src/sendtab.cpp
@@ -267,7 +267,7 @@ void MainWindow::setMemoEnabled(int number, bool enabled) {
 void MainWindow::memoButtonClicked(int number) {
     // Memos can only be used with zAddrs. So check that first
     auto addr = ui->sendToWidgets->findChild<QLineEdit*>(QString("Address") + QString::number(number));
-    if (!addr->text().trimmed().startsWith("z")) {
+    if (!addressFromAddressField(addr->text()).startsWith("z")) {
         QMessageBox msg(QMessageBox::Critical, "Memos can only be used with z-addresses",
         "The memo field can only be used with a z-address.\n" + addr->text() + "\ndoesn't look like a z-address",
         QMessageBox::Ok, this);