diff --git a/Core/Code/IO/mitkOperationActor.h b/Core/Code/IO/mitkOperationActor.h
index b126595144..8dd7f06b31 100644
--- a/Core/Code/IO/mitkOperationActor.h
+++ b/Core/Code/IO/mitkOperationActor.h
@@ -1,51 +1,51 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 
 #ifndef OPERATIONACTOR_H_HEADER_INCLUDED_C16E28BD
 #define OPERATIONACTOR_H_HEADER_INCLUDED_C16E28BD
 
 #include <MitkCoreExports.h>
 
 namespace mitk
 {
 
   class Operation;
   class OperationEvent;
 
   /** Macro for checking the type of an operation*/
 #define mitkCheckOperationTypeMacro(OperationType, operation, newOperationName) \
-  mitk::OperationType *newOperationName= dynamic_cast<mitk::OperationType *>(operation);\
+  mitk::OperationType *newOperationName= dynamic_cast<OperationType *>(operation);\
   if (newOperationName == NULL)\
   {\
   itkWarningMacro("Recieved wrong type of operation!");\
   return;\
   }\
 
   //##Documentation
   //## @brief abstract class, that can be used  by Undo to undo an operation.
   //##
   //## @ingroup Undo
   class MITK_CORE_EXPORT OperationActor
   {
   public:
     virtual ~OperationActor() {};
     virtual void ExecuteOperation(Operation* operation) = 0;
   };
 }
 
 
 #endif /* OPERATIONACTOR_H_HEADER_INCLUDED_C16E28BD */