diff --git a/src/osgPlugins/Inventor/ConvertFromInventor.cpp b/src/osgPlugins/Inventor/ConvertFromInventor.cpp
index 21b508fe6..0cf813bec 100644
--- a/src/osgPlugins/Inventor/ConvertFromInventor.cpp
+++ b/src/osgPlugins/Inventor/ConvertFromInventor.cpp
@@ -1143,7 +1143,7 @@ void ConvertFromInventor::addPointCB(void* data, SoCallbackAction* action,
 }
 //////////////////////////////////////////////////////////////////////
 void ConvertFromInventor::_setVRMLImageTexture(const SoVRMLImageTexture* vit,
-                                               SoCallbackAction* action)
+                                               SoCallbackAction* /*action*/)
 {
     _hasVRMLImageTexture = true;
     ///Coin API to extract VRML97 ImageTexture
diff --git a/src/osgPlugins/ive/Viewport.cpp b/src/osgPlugins/ive/Viewport.cpp
index 78de3a90d..996460e59 100644
--- a/src/osgPlugins/ive/Viewport.cpp
+++ b/src/osgPlugins/ive/Viewport.cpp
@@ -30,10 +30,10 @@ void Viewport::write(DataOutputStream* out){
         throw Exception("Viewport::write(): Could not cast this osg::Viewport to an osg::Object.");
     // Write Viewport's properties.
 
-    out->writeInt(x());
-    out->writeInt(y());
-    out->writeInt(width());
-    out->writeInt(height());
+    out->writeInt(static_cast<int>(x()));
+    out->writeInt(static_cast<int>(y()));
+    out->writeInt(static_cast<int>(width()));
+    out->writeInt(static_cast<int>(height()));
 }
 
 void Viewport::read(DataInputStream* in){