diff --git a/src/olsr/helper/olsr-helper.cc b/src/olsr/helper/olsr-helper.cc
index 357a90cd3..b54a69181 100644
--- a/src/olsr/helper/olsr-helper.cc
+++ b/src/olsr/helper/olsr-helper.cc
@@ -114,7 +114,7 @@ OlsrHelper::AssignStreams (NodeContainer c, int64_t stream)
               listOlsr = DynamicCast<olsr::RoutingProtocol> (listProto);
               if (listOlsr)
                 {
-                  currentStream += olsr->AssignStreams (currentStream);
+                  currentStream += listOlsr->AssignStreams (currentStream);
                   break;
                 }
             }