diff --git a/hist/hist/inc/TFitResultPtr.h b/hist/hist/inc/TFitResultPtr.h
index 0dda4a0d74e91eddd1270d65d12acb173ab97352..9c108f0d2f639a57fb2a7209cd7080165c44d337 100644
--- a/hist/hist/inc/TFitResultPtr.h
+++ b/hist/hist/inc/TFitResultPtr.h
@@ -54,7 +54,7 @@ private:
    int fStatus;          // fit status code
    TFitResult* fPointer; // Smart Pointer to TFitResult class  
 
-   ClassDef(TFitResultPtr,1)
+   ClassDef(TFitResultPtr,1)  //indirection to TFitResult
 };
 
 #endif