diff --git a/src/DE/DE_ConfigurationNode.hxx b/src/DE/DE_ConfigurationNode.hxx
index 4f06830c9e..45b653338f 100644
--- a/src/DE/DE_ConfigurationNode.hxx
+++ b/src/DE/DE_ConfigurationNode.hxx
@@ -147,7 +147,7 @@ public:
   //!
   //! The main goal - real-time loading plug-in activation.
   //! OpenSource components don't need to have activation process.
-  Standard_EXPORT void virtual CustomActivation(const TColStd_ListOfAsciiString&) {};
+  Standard_EXPORT virtual void CustomActivation(const TColStd_ListOfAsciiString&) {};
 
 public: