diff --git a/applications/present3D/Cluster.h b/applications/present3D/Cluster.h
index 9afa01b81..9d5f367e4 100644
--- a/applications/present3D/Cluster.h
+++ b/applications/present3D/Cluster.h
@@ -141,7 +141,7 @@ class CameraPacket {
         void writeEventQueue(osgViewer::Viewer& viewer);
 
         void setMasterKilled(const bool flag) { _masterKilled = flag; }
-        const bool getMasterKilled() const { return _masterKilled; }
+        bool getMasterKilled() const { return _masterKilled; }
 
         unsigned int    _byte_order;
         bool            _masterKilled;
diff --git a/applications/present3D/SpellChecker.cpp b/applications/present3D/SpellChecker.cpp
index ae2da32ad..56b9220a8 100644
--- a/applications/present3D/SpellChecker.cpp
+++ b/applications/present3D/SpellChecker.cpp
@@ -86,7 +86,7 @@ bool SpellChecker::isCorrect(const std::string& word) const
     return true;
 }
 
-SpellChecker::WordList SpellChecker::suggest(const std::string& word) const
+SpellChecker::WordList SpellChecker::suggest(const std::string& /*word*/) const
 {
     return WordList();
 }
diff --git a/applications/present3D/present3D.cpp b/applications/present3D/present3D.cpp
index a757f4786..0e0c6abec 100644
--- a/applications/present3D/present3D.cpp
+++ b/applications/present3D/present3D.cpp
@@ -137,7 +137,7 @@ class ForwardToDeviceEventHandler : public osgGA::GUIEventHandler {
 public:
     ForwardToDeviceEventHandler(osgGA::Device* device, bool format_mouse_events) : osgGA::GUIEventHandler(), _device(device), _forwardMouseEvents(format_mouse_events) {}
 
-    virtual bool handle (const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa, osg::Object *, osg::NodeVisitor *)
+    virtual bool handle (const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& /*aa*/, osg::Object *, osg::NodeVisitor *)
     {
         switch (ea.getEventType())
         {
@@ -180,7 +180,7 @@ class DumpEventHandler : public osgGA::GUIEventHandler {
 public:
     DumpEventHandler() : osgGA::GUIEventHandler() {}
 
-    virtual bool handle (const osgGA::GUIEventAdapter &ea, osgGA::GUIActionAdapter &aa, osg::Object *, osg::NodeVisitor *)
+    virtual bool handle (const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& /*aa*/, osg::Object *, osg::NodeVisitor *)
     {
         switch (ea.getEventType())
         {