diff --git a/src/SMESH_I/SMESH_Gen_i.cxx b/src/SMESH_I/SMESH_Gen_i.cxx
index 514eb9380..dbf4fe43e 100644
--- a/src/SMESH_I/SMESH_Gen_i.cxx
+++ b/src/SMESH_I/SMESH_Gen_i.cxx
@@ -4195,6 +4195,7 @@ void SMESH_Gen_i::Close( SALOMEDS::SComponent_ptr theComponent )
 //     context->myDocument = 0;
 //   }
   
+  myCurrentStudy = SALOMEDS::Study::_nil();
   return;
 }
 
@@ -4316,6 +4317,11 @@ void SMESH_Gen_i::SetName(const char* theIOR,
   }
 }
 
+int SMESH_Gen_i::GetCurrentStudyID()
+{
+  return myCurrentStudy->_is_nil() || myCurrentStudy->_non_existent() ? -1 : myCurrentStudy->StudyId();
+}
+    
 //=============================================================================
 /*! 
  *  SMESHEngine_factory
diff --git a/src/SMESH_I/SMESH_Gen_i.hxx b/src/SMESH_I/SMESH_Gen_i.hxx
index 9ba9bdbb9..0a6e01061 100644
--- a/src/SMESH_I/SMESH_Gen_i.hxx
+++ b/src/SMESH_I/SMESH_Gen_i.hxx
@@ -498,8 +498,7 @@ public:
   }
 
   // Get current study ID
-  int GetCurrentStudyID()
-  { return myCurrentStudy->_is_nil() ? -1 : myCurrentStudy->StudyId(); }
+  int GetCurrentStudyID();
 
   /*!
    * \brief Find SObject for an algo