diff --git a/kmmessage.cpp b/kmmessage.cpp
index 6d37a6b9d..c8a1a74b8 100644
--- a/kmmessage.cpp
+++ b/kmmessage.cpp
@@ -1704,7 +1704,7 @@ uint KMMessage::identityUoid() const {
   int id = idString.toUInt( &ok );
 
   if ( !ok || id == 0 )
-    id = kmkernel->identityManager()->identityForAddress( to() + cc() ).uoid();
+    id = kmkernel->identityManager()->identityForAddress( to() + ", " + cc() ).uoid();
   if ( id == 0 && parent() )
     id = parent()->identity();