diff --git a/src/osgPlugins/ive/DataOutputStream.cpp b/src/osgPlugins/ive/DataOutputStream.cpp
index 2c932fd07..7d89a74ac 100644
--- a/src/osgPlugins/ive/DataOutputStream.cpp
+++ b/src/osgPlugins/ive/DataOutputStream.cpp
@@ -1416,7 +1416,7 @@ void DataOutputStream::writeNode(const osg::Node* node)
         {
             if (typeid(node)!=typeid(osg::Node))
             {
-                OSG_WARN<<"Unknown node in Group::write(), className()="<<node->className()<<std::endl;
+                OSG_WARN<<"Unknown node in DataOutputStream::writeNode(..), className()="<<node->className()<<std::endl;
             }
 
             ((ive::Node*)(node))->write(this);