diff --git a/src/osgDB/InputStream.cpp b/src/osgDB/InputStream.cpp
index 816de6a96..cb6b5c62f 100644
--- a/src/osgDB/InputStream.cpp
+++ b/src/osgDB/InputStream.cpp
@@ -797,6 +797,7 @@ osg::Image* InputStream::readImage(bool readFromExternal)
         // we don't want to overwrite the properties of the image in the cache as this could cause theading problems if the object is currently being used
         // so we read the properties from the file into a dummy object and discard the changes.
         osg::ref_ptr<osg::Object> temp_obj = readObjectFields("osg::Object", id, _dummyReadObject.get() );
+        _identifierMap[id] = image;
     }
     else
     {