diff --git a/include/osgProducer/Viewer b/include/osgProducer/Viewer
index c92081a71..2d8cbedf3 100644
--- a/include/osgProducer/Viewer
+++ b/include/osgProducer/Viewer
@@ -120,9 +120,9 @@ class OSGPRODUCER_EXPORT Viewer : public OsgCameraGroup, public osgGA::GUIAction
         Producer::KeyboardMouse* getKeyboardMouse() { return _kbm.get(); }
         const Producer::KeyboardMouse* getKeyboardMouse() const { return _kbm.get(); }
 
-        void setKeyboardMouseCallback(KeyboardMouseCallback* kbmcb);
-        KeyboardMouseCallback* getKeyboardMouseCallback() { return _kbmcb.get(); }
-        const KeyboardMouseCallback* getKeyboardMouseCallback() const { return _kbmcb.get(); }
+        void setKeyboardMouseCallback(osgProducer::KeyboardMouseCallback* kbmcb);
+        osgProducer::KeyboardMouseCallback* getKeyboardMouseCallback() { return _kbmcb.get(); }
+        const osgProducer::KeyboardMouseCallback* getKeyboardMouseCallback() const { return _kbmcb.get(); }
 
         
 
diff --git a/src/osgProducer/Viewer.cpp b/src/osgProducer/Viewer.cpp
index 3790f3cd7..bb52d576d 100644
--- a/src/osgProducer/Viewer.cpp
+++ b/src/osgProducer/Viewer.cpp
@@ -188,7 +188,7 @@ void Viewer::setKeyboardMouse(Producer::KeyboardMouse* kbm)
     if (_kbm.valid() && _kbmcb.valid()) _kbm->setCallback(_kbmcb.get());
 }
 
-void Viewer::setKeyboardMouseCallback(KeyboardMouseCallback* kbmcb)
+void Viewer::setKeyboardMouseCallback(osgProducer::KeyboardMouseCallback* kbmcb)
 {
     _kbmcb = kbmcb;
     if (_kbm.valid() && _kbmcb.valid()) _kbm->setCallback(_kbmcb.get());