1 diff --git a/src/Standard/Standard_ErrorHandler.hxx b/src/Standard/Standard_ErrorHandler.hxx
2 index 09bdc7bfbf..726951fb89 100644
3 --- a/src/Standard/Standard_ErrorHandler.hxx
4 +++ b/src/Standard/Standard_ErrorHandler.hxx
5 @@ -155,13 +155,13 @@ public:
8 //! Registers this callback object in the current error handler (if found).
9 - void RegisterCallback();
10 + Standard_EXPORT void RegisterCallback();
12 //! Unregisters this callback object from the error handler.
13 - void UnregisterCallback();
14 + Standard_EXPORT void UnregisterCallback();
17 - virtual ~Callback();
18 + Standard_EXPORT virtual ~Callback();
20 //! The callback function to perform necessary callback action.
21 //! Called by the exception handler when it is being destroyed but