diff --git a/include/osgDB/Registry b/include/osgDB/Registry
index 24a70f12a..294f0e1d7 100644
--- a/include/osgDB/Registry
+++ b/include/osgDB/Registry
@@ -191,6 +191,8 @@ class OSGDB_EXPORT Registry : public osg::Referenced
         /** Remove all objects in the cache regardless of having external references or expiry times.*/ 
         void clearObjectCache();
 
+        void addEntryToObjectCache(const std::string& filename, osg::Object* object, double timestamp = 0.0);
+
         /** get the attached library with specified name.*/
         DynamicLibrary*              getLibrary(const std::string& fileName);
 
diff --git a/src/osgDB/Registry.cpp b/src/osgDB/Registry.cpp
index b2493f694..7f29db32f 100644
--- a/src/osgDB/Registry.cpp
+++ b/src/osgDB/Registry.cpp
@@ -1165,7 +1165,7 @@ ReaderWriter::ReadResult Registry::readObject(const std::string& fileName,bool u
         {
             // update cache with new entry.
             notify(INFO)<<"Adding to cache object "<<file<<std::endl;
-            _objectCache[file]=ObjectTimeStampPair(rr.getObject(),0.0f);
+            addEntryToObjectCache(file,rr.getObject());
         }
         
         return rr;
@@ -1303,7 +1303,7 @@ ReaderWriter::ReadResult Registry::readImage(const std::string& fileName,bool us
         {
             // update cache with new entry.
             notify(INFO)<<"Adding to cache image "<<file<<std::endl;
-            _objectCache[file]=ObjectTimeStampPair(rr.getObject(),0.0f);
+            addEntryToObjectCache(file,rr.getObject());
         }
         
         return rr;
@@ -1456,7 +1456,7 @@ ReaderWriter::ReadResult Registry::readNode(const std::string& fileName,bool use
         {
             // update cache with new entry.
             notify(INFO)<<"Adding to cache node "<<file<<std::endl;
-            _objectCache[file]=ObjectTimeStampPair(rr.getObject(),0.0f);
+            addEntryToObjectCache(file,rr.getObject());
         }
         
         return rr;
@@ -1547,6 +1547,11 @@ void Registry::convertStringPathIntoFilePathList(const std::string& paths,FilePa
  
 }
 
+void Registry::addEntryToObjectCache(const std::string& filename, osg::Object* object, double timestamp)
+{
+     _objectCache[filename]=ObjectTimeStampPair(object,timestamp);
+}
+
 void Registry::updateTimeStampOfObjectsInCacheWithExtenalReferences(double currentTime)
 {