diff --git a/src/osgPlugins/ive/DataInputStream.cpp b/src/osgPlugins/ive/DataInputStream.cpp
index 4f30c3472..09b3973a2 100644
--- a/src/osgPlugins/ive/DataInputStream.cpp
+++ b/src/osgPlugins/ive/DataInputStream.cpp
@@ -592,7 +592,7 @@ osg::Geometry::AttributeBinding DataInputStream::readBinding(){
     switch((int)c){
         case 0:    return osg::Geometry::BIND_OFF;
         case 1: return osg::Geometry::BIND_OVERALL;
-        case 2: return 3 /*osg::Geometry::BIND_PER_PRIMITIVE*/;
+        case 2: return static_cast<osg::Geometry::AttributeBinding>(3) /*osg::Geometry::BIND_PER_PRIMITIVE*/;
         case 3: return osg::Geometry::BIND_PER_PRIMITIVE_SET;
         case 4: return osg::Geometry::BIND_PER_VERTEX;
         default: