diff --git a/src/osx/cocoa/nonownedwnd.mm b/src/osx/cocoa/nonownedwnd.mm
index ac4bfd2e4a..6ae40522fe 100644
--- a/src/osx/cocoa/nonownedwnd.mm
+++ b/src/osx/cocoa/nonownedwnd.mm
@@ -568,12 +568,12 @@ long style, long extraStyle, const wxString& WXUNUSED(name) )
 
     if ( style & wxFRAME_TOOL_WINDOW || ( style & wxPOPUP_WINDOW ) ||
             GetWXPeer()->GetExtraStyle() & wxTOPLEVEL_EX_DIALOG )
-    {
         m_macWindow = [wxNSPanel alloc];
-    }
     else
         m_macWindow = [wxNSWindow alloc];
 
+    [m_macWindow setAcceptsMouseMovedEvents:YES];
+
     CGWindowLevel level = kCGNormalWindowLevel;
 
     if ( style & wxFRAME_TOOL_WINDOW )