diff --git a/reactos/lib/atl/atlcore.h b/reactos/lib/atl/atlcore.h
index c2f22eacfdf..08e19d41382 100644
--- a/reactos/lib/atl/atlcore.h
+++ b/reactos/lib/atl/atlcore.h
@@ -43,7 +43,7 @@ public:
 		memset(&m_sec, 0, sizeof(CRITICAL_SECTION));
 	}
 
-	~CComCriticalSection()
+	virtual ~CComCriticalSection()
 	{
 	}