diff --git a/include/dynamic-graph/signal-base.h b/include/dynamic-graph/signal-base.h
index ab379d74ebe5aa209096681127fd13dc5c9ac010..950cd0c7a0d5bc064978a7b27dc7b3475bd4d38e 100644
--- a/include/dynamic-graph/signal-base.h
+++ b/include/dynamic-graph/signal-base.h
@@ -152,7 +152,7 @@ namespace dynamicgraph
 	 "(while trying to unplug %s).",this->getName ().c_str ());
     }
 
-    virtual bool isPluged () const
+    virtual bool isPlugged () const
     {
       return  false;
     }
diff --git a/include/dynamic-graph/signal-ptr.h b/include/dynamic-graph/signal-ptr.h
index 4c6909c65d84c38db93c45a190ff51fe268812a0..8547ee38ccf438270a819d4abe1a222ea936d419 100644
--- a/include/dynamic-graph/signal-ptr.h
+++ b/include/dynamic-graph/signal-ptr.h
@@ -73,7 +73,12 @@ namespace dynamicgraph
     const SignalBase<Time>* getAbstractPtr () const; // throw
     virtual void plug( SignalBase<Time>* ref );
     virtual void unplug () { plug(NULL); }
-    virtual bool isPluged () const { return (NULL!=signalPtr); }
+    virtual bool isPluged () const {
+      std::cerr << "The method isPluged is deprecated.";
+      std::cerr << " Please use isPlugged instead" << std::endl;
+      return isPlugged ();
+    }
+    virtual bool isPlugged () const { return (NULL!=signalPtr); }
     virtual SignalBase<Time>* getPluged () const { return signalPtr; }
     virtual bool isAbstractPluged () const;
     virtual const Time& getTime () const;
@@ -83,7 +88,7 @@ namespace dynamicgraph
     inline const Signal<T,Time>* operator-> () const { return getPtr (); }
     inline Signal<T,Time>& operator* () { return *getPtr (); }
     inline const Signal<T,Time>& operator* () const { return *getPtr (); }
-    inline operator bool () const { return isPluged (); }
+    inline operator bool () const { return isPlugged (); }
 
   public: /* --- INHERITANCE --- */
 
diff --git a/include/dynamic-graph/signal-ptr.t.cpp b/include/dynamic-graph/signal-ptr.t.cpp
index 5f9da340275ea65d854605e5ed19ae2716b5faa0..6862e7ee91a18d888c6634c2409b3f625e16a08d 100644
--- a/include/dynamic-graph/signal-ptr.t.cpp
+++ b/include/dynamic-graph/signal-ptr.t.cpp
@@ -38,7 +38,7 @@ namespace dynamicgraph
   getPtr   ()
   {
     dgTDEBUGIN(25);
-    if(! isPluged () )
+    if(! isPlugged () )
       DG_THROW ExceptionSignal( ExceptionSignal::NOT_INITIALIZED,
 				"In SignalPtr: SIN ptr not set.",
 				" (in signal <%s>)",getName ().c_str ());
@@ -50,10 +50,10 @@ namespace dynamicgraph
   const Signal<T,Time>* SignalPtr<T,Time>::
   getPtr   () const
   {
-    dgTDEBUGIN(25) << SignalBase<Time>::name <<"("<< isPluged () <<")"
+    dgTDEBUGIN(25) << SignalBase<Time>::name <<"("<< isPlugged () <<")"
 		   << this << "->"<<signalPtr <<std::endl;
     dgTDEBUGIN(25);
-    if(! isPluged () )
+    if(! isPlugged () )
       { DG_THROW ExceptionSignal( ExceptionSignal::NOT_INITIALIZED,
 				  "In SignalPtr: SIN ptr not set.",
 				  " (in signal <%s>)",getName ().c_str ()); }
@@ -142,7 +142,7 @@ namespace dynamicgraph
   void SignalPtr<T,Time>::
   checkCompatibility  ()
   {
-    if( isPluged()&&(!autoref ()) )
+    if( isPlugged()&&(!autoref ()) )
       { getPtr()->checkCompatibility(); }
     else if( isAbstractPluged()&&(!autoref ()) )
       { abstractTransmitter->checkCompatibility(); }
@@ -177,7 +177,7 @@ namespace dynamicgraph
   access( const Time & t )
   {
     dgTDEBUGIN(15);
-    if( modeNoThrow&&(! isPluged ())&&Signal<T,Time>::copyInit )
+    if( modeNoThrow&&(! isPlugged ())&&Signal<T,Time>::copyInit )
       {
 	dgTDEBUGOUT(15);
 	return Signal<T,Time>::accessCopy ();
@@ -203,7 +203,7 @@ namespace dynamicgraph
   const T& SignalPtr<T,Time>::
   accessCopy  () const
   {
-    if( modeNoThrow&&(! isPluged ())&&Signal<T,Time>::copyInit )
+    if( modeNoThrow&&(! isPlugged ())&&Signal<T,Time>::copyInit )
       return Signal<T,Time>::accessCopy ();
     else if( autoref () ) return Signal<T,Time>::accessCopy ();
     else if( transmitAbstract ) return *transmitAbstractData;
@@ -233,7 +233,7 @@ namespace dynamicgraph
   std::ostream& SignalPtr<T,Time>::
   display( std::ostream& os ) const
   {
-    dgTDEBUGIN(25) << SignalBase<Time>::name << this << "||" << isPluged () << "||"<<signalPtr;
+    dgTDEBUGIN(25) << SignalBase<Time>::name << this << "||" << isPlugged () << "||"<<signalPtr;
     { Signal<T,Time>::display(os); }
 
     if( (isAbstractPluged ())&&(!autoref ()) )