--- a/widget/nsBaseWidget.cpp
+++ b/widget/nsBaseWidget.cpp
@@ -347,16 +347,22 @@ nsBaseWidget::~nsBaseWidget()
   if (mLayerManager) {
     if (BasicLayerManager* mgr = mLayerManager->AsBasicLayerManager()) {
       mgr->ClearRetainerWidget();
     }
   }
 
   FreeShutdownObserver();
   RevokeTransactionIdAllocator();
+#if defined(MOZ_WIDGET_ANDROID)
+  // The mCompositorSession should have been cleaned up in nsBaseWidget::Shutdown()
+  // DestroyLayerManager() will call DestroyCompositor() which will crash if
+  // called from nsBaseWidget destructor. See Bug 1392705
+  MOZ_ASSERT(!mCompositorSession);
+#endif // defined(MOZ_WIDGET_ANDROID)
   DestroyLayerManager();
 
 #ifdef NOISY_WIDGET_LEAKS
   gNumWidgets--;
   printf("WIDGETS- = %d\n", gNumWidgets);
 #endif
 
   delete mOriginalBounds;