diff --git a/src/mac/app.cpp b/src/mac/app.cpp
index ebbb1498be..ad2eb4d5ea 100644
--- a/src/mac/app.cpp
+++ b/src/mac/app.cpp
@@ -1222,6 +1222,8 @@ void wxApp::OnIdle(wxIdleEvent& event)
     wxMacProcessNotifierAndPendingEvents();
 
   s_inOnIdle = FALSE;
+  if(!wxMenuBar::MacGetInstalledMenuBar() && wxMenuBar::MacGetCommonMenuBar())
+    wxMenuBar::MacGetCommonMenuBar()->MacInstallMenuBar();
 }
 
 void wxWakeUpIdle()
diff --git a/src/mac/carbon/app.cpp b/src/mac/carbon/app.cpp
index ebbb1498be..ad2eb4d5ea 100644
--- a/src/mac/carbon/app.cpp
+++ b/src/mac/carbon/app.cpp
@@ -1222,6 +1222,8 @@ void wxApp::OnIdle(wxIdleEvent& event)
     wxMacProcessNotifierAndPendingEvents();
 
   s_inOnIdle = FALSE;
+  if(!wxMenuBar::MacGetInstalledMenuBar() && wxMenuBar::MacGetCommonMenuBar())
+    wxMenuBar::MacGetCommonMenuBar()->MacInstallMenuBar();
 }
 
 void wxWakeUpIdle()