diff --git a/OSBindings/Qt/mainwindow.cpp b/OSBindings/Qt/mainwindow.cpp
index 86afb4691..add228524 100644
--- a/OSBindings/Qt/mainwindow.cpp
+++ b/OSBindings/Qt/mainwindow.cpp
@@ -1175,8 +1175,10 @@ void MainWindow::start_macintosh() {
 	auto target = std::make_unique<Target>();
 
 	switch(ui->macintoshModelComboBox->currentIndex()) {
-		default:	target->model = Target::Model::Mac512ke;	break;
-		case 1:		target->model = Target::Model::MacPlus;		break;
+		default:	target->model = Target::Model::Mac128k;		break;
+		case 1:		target->model = Target::Model::Mac512k;		break;
+		case 2:		target->model = Target::Model::Mac512ke;	break;
+		case 3:		target->model = Target::Model::MacPlus;		break;
 	}
 
 	launchTarget(std::move(target));
diff --git a/OSBindings/Qt/mainwindow.ui b/OSBindings/Qt/mainwindow.ui
index e7d29c142..88acf3f0e 100644
--- a/OSBindings/Qt/mainwindow.ui
+++ b/OSBindings/Qt/mainwindow.ui
@@ -248,6 +248,16 @@
             </item>
             <item row="0" column="1">
              <widget class="QComboBox" name="macintoshModelComboBox">
+              <item>
+               <property name="text">
+                <string>128k</string>
+               </property>
+              </item>
+              <item>
+               <property name="text">
+                <string>512k</string>
+               </property>
+              </item>
               <item>
                <property name="text">
                 <string>512ke</string>