diff --git a/src/StdObjMgt/StdObjMgt_WriteData.cxx b/src/StdObjMgt/StdObjMgt_WriteData.cxx
index 7830181f26..78420b1281 100644
--- a/src/StdObjMgt/StdObjMgt_WriteData.cxx
+++ b/src/StdObjMgt/StdObjMgt_WriteData.cxx
@@ -35,7 +35,7 @@ void StdObjMgt_WriteData::WritePersistentObject (const Handle(StdObjMgt_Persiste
 
 StdObjMgt_WriteData& StdObjMgt_WriteData::operator << (const Handle(StdObjMgt_Persistent)& thePersistent)
 {
-  *myDriver << (thePersistent ? thePersistent->RefNum() : 0);
+  myDriver->PutReference(thePersistent ? thePersistent->RefNum() : 0);
   return *this;
 }
 
diff --git a/src/StdObjMgt/StdObjMgt_WriteData.hxx b/src/StdObjMgt/StdObjMgt_WriteData.hxx
index 22b97c97f1..7005877bd6 100644
--- a/src/StdObjMgt/StdObjMgt_WriteData.hxx
+++ b/src/StdObjMgt/StdObjMgt_WriteData.hxx
@@ -53,7 +53,7 @@ public:
   template <class Persistent>
   StdObjMgt_WriteData& operator << (const Handle(Persistent)& thePersistent)
   {
-    *myDriver << (thePersistent ? thePersistent->RefNum() : 0);
+    myDriver->PutReference(thePersistent ? thePersistent->RefNum() : 0);
     return *this;
   }