diff --git a/apps/openmw/mwgui/container.cpp b/apps/openmw/mwgui/container.cpp
index f89cd4ff32..bfe93f6ed9 100644
--- a/apps/openmw/mwgui/container.cpp
+++ b/apps/openmw/mwgui/container.cpp
@@ -161,7 +161,8 @@ namespace MWGui
         if (mModel)
             mModel->onClose();
 
-        MWBase::Environment::get().getMechanicsManager()->onClose(mPtr);
+        if (!mPtr.isEmpty())
+            MWBase::Environment::get().getMechanicsManager()->onClose(mPtr);
     }
 
     void ContainerWindow::onCloseButtonClicked(MyGUI::Widget* _sender)