diff --git a/src/osgPlugins/OpenFlight/LightPointRecords.cpp b/src/osgPlugins/OpenFlight/LightPointRecords.cpp
index 7f069bce0..058562ae8 100644
--- a/src/osgPlugins/OpenFlight/LightPointRecords.cpp
+++ b/src/osgPlugins/OpenFlight/LightPointRecords.cpp
@@ -447,7 +447,7 @@ protected:
 
     virtual ~LightPointSystem() {}
 
-    virtual void readRecord(RecordInputStream& in, Document& document)
+    virtual void readRecord(RecordInputStream& in, Document& /*document*/)
     {
         std::string id = in.readString(8);
 
@@ -483,7 +483,7 @@ protected:
             _parent->addChild(*((osg::Group*)_switch.get()));
     }
 
-    virtual void dispose(Document& document)
+    virtual void dispose(Document& /*document*/)
     {
         if (!_switch.valid()) return;
 
diff --git a/src/osgPlugins/OpenFlight/PrimaryRecords.cpp b/src/osgPlugins/OpenFlight/PrimaryRecords.cpp
index 8e8594a7a..d15fb5be0 100644
--- a/src/osgPlugins/OpenFlight/PrimaryRecords.cpp
+++ b/src/osgPlugins/OpenFlight/PrimaryRecords.cpp
@@ -767,7 +767,7 @@ public:
 protected:
 
     virtual ~InstanceDefinition() {}
-    virtual void readRecord(RecordInputStream& in, Document& document)
+    virtual void readRecord(RecordInputStream& in, Document& /*document*/)
     {
         in.forward(2);
         _number = (int)in.readUInt16();
diff --git a/src/osgPlugins/OpenFlight/ReaderWriterATTR.cpp b/src/osgPlugins/OpenFlight/ReaderWriterATTR.cpp
index f1ea127be..f2fbfdbca 100644
--- a/src/osgPlugins/OpenFlight/ReaderWriterATTR.cpp
+++ b/src/osgPlugins/OpenFlight/ReaderWriterATTR.cpp
@@ -185,7 +185,7 @@ ReaderWriter::ReadResult ReaderWriterATTR::readObject(const std::string& file, c
 
 
 ReaderWriter::WriteResult
-ReaderWriterATTR::writeObject(const osg::Object& object, const std::string& fileName, const Options* options) const
+ReaderWriterATTR::writeObject(const osg::Object& object, const std::string& fileName, const Options* /*options*/) const
 {
     using std::ios;
 
diff --git a/src/osgPlugins/OpenFlight/VertexPaletteManager.cpp b/src/osgPlugins/OpenFlight/VertexPaletteManager.cpp
index 7005a3e61..8c647cb09 100644
--- a/src/osgPlugins/OpenFlight/VertexPaletteManager.cpp
+++ b/src/osgPlugins/OpenFlight/VertexPaletteManager.cpp
@@ -172,7 +172,7 @@ VertexPaletteManager::write( DataOutputStream& dos ) const
 
 
 VertexPaletteManager::PaletteRecordType
-VertexPaletteManager::recordType( const osg::Array* v, const osg::Array* c,
+VertexPaletteManager::recordType( const osg::Array* /*v*/, const osg::Array* /*c*/,
     const osg::Array* n, const osg::Array* t )
 {
     if (t)
diff --git a/src/osgPlugins/OpenFlight/expGeometryRecords.cpp b/src/osgPlugins/OpenFlight/expGeometryRecords.cpp
index 31f0595e0..8198db440 100644
--- a/src/osgPlugins/OpenFlight/expGeometryRecords.cpp
+++ b/src/osgPlugins/OpenFlight/expGeometryRecords.cpp
@@ -50,7 +50,7 @@ static unsigned int LAYER_7( 0x80000000 >> 6 );
 
 
 bool
-FltExportVisitor::isLit( const osg::Geometry& geom ) const
+FltExportVisitor::isLit( const osg::Geometry& /*geom*/ ) const
 {
     const osg::StateSet* ss = getCurrentStateSet();
     if ( ss->getMode( GL_LIGHTING ) & osg::StateAttribute::ON )