diff --git a/native/Avalonia.Native/src/OSX/window.mm b/native/Avalonia.Native/src/OSX/window.mm
index 35c97f1701..7a6e7dc72f 100644
--- a/native/Avalonia.Native/src/OSX/window.mm
+++ b/native/Avalonia.Native/src/OSX/window.mm
@@ -1666,6 +1666,7 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
 
     switch(event.buttonNumber)
     {
+        case 2:
         case 3:
             _isMiddlePressed = true;
             [self mouseEvent:event withType:MiddleButtonDown];
@@ -1698,6 +1699,7 @@ NSArray* AllLoopModes = [NSArray arrayWithObjects: NSDefaultRunLoopMode, NSEvent
 {
     switch(event.buttonNumber)
     {
+        case 2:
         case 3:
             _isMiddlePressed = false;
             [self mouseEvent:event withType:MiddleButtonUp];