diff --git a/src/mac/carbon/app.cpp b/src/mac/carbon/app.cpp
index 3e1b8065fc..8a3e1eb8d8 100644
--- a/src/mac/carbon/app.cpp
+++ b/src/mac/carbon/app.cpp
@@ -1447,11 +1447,17 @@ wxMouseState wxGetMouseState()
     ms.SetX(pt.x);
     ms.SetY(pt.y);
 
+#if TARGET_API_MAC_OSX
     UInt32 buttons = GetCurrentButtonState();
     ms.SetLeftDown( (buttons & 0x01) != 0 );
     ms.SetMiddleDown( (buttons & 0x04) != 0 );
     ms.SetRightDown( (buttons & 0x02) != 0 );
-    
+#else
+    ms.SetLeftDown( Button() );
+    ms.SetMiddleDown( 0 );
+    ms.SetRightDown( 0 );
+#endif
+
     UInt32 modifiers = GetCurrentKeyModifiers();
     ms.SetControlDown(modifiers & controlKey);
     ms.SetShiftDown(modifiers & shiftKey);