diff --git a/include/dynamic-graph/signal-ptr.h b/include/dynamic-graph/signal-ptr.h
index 4acdffed1b433d0c2ec5e46c0a31ed20def7ab5f..5b0484bfcc65144861de87275182cf8c5697bfa2 100644
--- a/include/dynamic-graph/signal-ptr.h
+++ b/include/dynamic-graph/signal-ptr.h
@@ -62,9 +62,10 @@ namespace dynamicgraph
     const SignalBase<Time>* getAbstractPtr () const; // throw
     virtual void plug( SignalBase<Time>* ref );
     virtual void unplug () { plug(NULL); }
-    virtual bool isPluged () const DYNAMIC_GRAPH_DEPRECATED {
+    //Useless function, didn't find any use of this one
+    /*virtual bool isPluged () const DYNAMIC_GRAPH_DEPRECATED {
       return isPlugged ();
-    }
+    }*/
     virtual bool isPlugged () const { return (NULL!=signalPtr); }
     virtual SignalBase<Time>* getPluged () const { return signalPtr; }
     virtual bool isAbstractPluged () const;