diff --git a/hurricane/src/viewer/CellViewer.cpp b/hurricane/src/viewer/CellViewer.cpp
index e3fdba4c..33c3699f 100644
--- a/hurricane/src/viewer/CellViewer.cpp
+++ b/hurricane/src/viewer/CellViewer.cpp
@@ -297,8 +297,8 @@ namespace Hurricane {
     connect ( _controllerAction      , SIGNAL(triggered())        , _controller, SLOT(toggleShow()) );
     connect ( _gotoAction            , SIGNAL(triggered())        , this       , SLOT(doGoto()) );
 
-    connect ( _cellWidget            , SIGNAL(dbuModeChanged(int,DbU::UnitPower))
-            , _goto                  , SLOT  (changeDbuMode (int,DbU::UnitPower)) );
+    connect ( _cellWidget            , SIGNAL(dbuModeChanged(unsigned int,DbU::UnitPower))
+            , _goto                  , SLOT  (changeDbuMode (unsigned int,DbU::UnitPower)) );
 
     connect ( _cellWidget            , SIGNAL(mousePositionChanged(const Point&))
             , _mousePosition         , SLOT  (setPosition(const Point&)) );
diff --git a/hurricane/src/viewer/DisplayFilterWidget.cpp b/hurricane/src/viewer/DisplayFilterWidget.cpp
index 26a1fb97..073d16f2 100644
--- a/hurricane/src/viewer/DisplayFilterWidget.cpp
+++ b/hurricane/src/viewer/DisplayFilterWidget.cpp
@@ -197,10 +197,10 @@ namespace Hurricane {
     if ( _cellWidget ) {
       disconnect ( this        , SIGNAL(queryFilterChanged()), _cellWidget, SLOT(changeQueryFilter()) );
       disconnect ( _cellWidget , SIGNAL(queryFilterChanged()), this       , SLOT(changeQueryFilter()) );
-      disconnect ( this        , SIGNAL(dbuModeChanged    (int,DbU::UnitPower))
-                 , _cellWidget , SLOT  (changeDbuMode     (int,DbU::UnitPower)) );
-      disconnect ( _cellWidget , SIGNAL(dbuModeChanged    (int,DbU::UnitPower))
-                 , this        , SLOT  (changeDbuMode     (int,DbU::UnitPower)) );
+      disconnect ( this        , SIGNAL(dbuModeChanged    (unsigned int,DbU::UnitPower))
+                 , _cellWidget , SLOT  (changeDbuMode     (unsigned int,DbU::UnitPower)) );
+      disconnect ( _cellWidget , SIGNAL(dbuModeChanged    (unsigned int,DbU::UnitPower))
+                 , this        , SLOT  (changeDbuMode     (unsigned int,DbU::UnitPower)) );
     }
 
     _cellWidget = cw;
@@ -208,10 +208,10 @@ namespace Hurricane {
 
     connect ( this        , SIGNAL(queryFilterChanged()), _cellWidget, SLOT(changeQueryFilter()) );
     connect ( _cellWidget , SIGNAL(queryFilterChanged()), this       , SLOT(changeQueryFilter()) );
-    connect ( this        , SIGNAL(dbuModeChanged    (int,DbU::UnitPower))
-            , _cellWidget , SLOT  (changeDbuMode     (int,DbU::UnitPower)) );
-    connect ( _cellWidget , SIGNAL(dbuModeChanged    (int,DbU::UnitPower))
-            , this        , SLOT  (changeDbuMode     (int,DbU::UnitPower)) );
+    connect ( this        , SIGNAL(dbuModeChanged    (unsigned int,DbU::UnitPower))
+            , _cellWidget , SLOT  (changeDbuMode     (unsigned int,DbU::UnitPower)) );
+    connect ( _cellWidget , SIGNAL(dbuModeChanged    (unsigned int,DbU::UnitPower))
+            , this        , SLOT  (changeDbuMode     (unsigned int,DbU::UnitPower)) );
 
     _updateState = ExternalEmit;
     changeQueryFilter ();
@@ -219,7 +219,7 @@ namespace Hurricane {
   }
 
 
-  void  DisplayFilterWidget::changeDbuMode ( int mode, DbU::UnitPower p )
+  void  DisplayFilterWidget::changeDbuMode ( unsigned int mode, DbU::UnitPower p )
   {
     if ( _cellWidget == NULL ) return;
 
diff --git a/hurricane/src/viewer/GotoWidget.cpp b/hurricane/src/viewer/GotoWidget.cpp
index 805fe4ec..59f349de 100644
--- a/hurricane/src/viewer/GotoWidget.cpp
+++ b/hurricane/src/viewer/GotoWidget.cpp
@@ -136,7 +136,7 @@ namespace Hurricane {
   }
 
 
-  void  GotoWidget::changeDbuMode ( int mode, DbU::UnitPower p )
+  void  GotoWidget::changeDbuMode ( unsigned int mode, DbU::UnitPower p )
   {
     if ( mode == DbU::Physical ) {
       switch ( p ) {
diff --git a/hurricane/src/viewer/hurricane/viewer/CellWidget.h b/hurricane/src/viewer/hurricane/viewer/CellWidget.h
index 01ac9f6f..4abcce28 100644
--- a/hurricane/src/viewer/hurricane/viewer/CellWidget.h
+++ b/hurricane/src/viewer/hurricane/viewer/CellWidget.h
@@ -252,7 +252,7 @@ namespace Hurricane {
               void                    stateChanged               ( shared_ptr<CellWidget::State>& );
               void                    styleChanged               ();
               void                    queryFilterChanged         ();
-              void                    dbuModeChanged             ( int mode, DbU::UnitPower );
+              void                    dbuModeChanged             ( unsigned int mode, DbU::UnitPower );
               void                    updatePalette              ( Cell* );
               void                    mousePositionChanged       ( const Point& position );
               void                    selectionModeChanged       ();
diff --git a/hurricane/src/viewer/hurricane/viewer/DisplayFilterWidget.h b/hurricane/src/viewer/hurricane/viewer/DisplayFilterWidget.h
index 58c6a62d..27297ffe 100644
--- a/hurricane/src/viewer/hurricane/viewer/DisplayFilterWidget.h
+++ b/hurricane/src/viewer/hurricane/viewer/DisplayFilterWidget.h
@@ -47,10 +47,10 @@ namespace Hurricane {
       void        setCellWidget        ( CellWidget* );
     signals:                           
       void        queryFilterChanged   ();
-      void        dbuModeChanged       ( int mode, DbU::UnitPower );
+      void        dbuModeChanged       ( unsigned int mode, DbU::UnitPower );
     public slots:                      
       void        changeQueryFilter    ();
-      void        changeDbuMode        ( int mode, DbU::UnitPower );
+      void        changeDbuMode        ( unsigned int mode, DbU::UnitPower );
       void        startLevelChanged    ( int level );
       void        stopLevelChanged     ( int level );
       void        setDoMasterCells     ( int state );
diff --git a/hurricane/src/viewer/hurricane/viewer/GotoWidget.h b/hurricane/src/viewer/hurricane/viewer/GotoWidget.h
index 7749ad3d..c918198b 100644
--- a/hurricane/src/viewer/hurricane/viewer/GotoWidget.h
+++ b/hurricane/src/viewer/hurricane/viewer/GotoWidget.h
@@ -53,7 +53,7 @@ namespace Hurricane {
              double     fromDbu          ( DbU::Unit ) const;
     public slots:
              void       acceptAndUpdate  ();
-             void       changeDbuMode    ( int, DbU::UnitPower );
+             void       changeDbuMode    ( unsigned int, DbU::UnitPower );
     private:
       QRegExp    _xyRegexp;
       QLineEdit* _xyEdit;