diff --git a/ro_core/core/logical_device_manager.go b/ro_core/core/logical_device_manager.go
index 846df63..05b494a 100644
--- a/ro_core/core/logical_device_manager.go
+++ b/ro_core/core/logical_device_manager.go
@@ -219,5 +219,5 @@
 			return port, nil
 		}
 	}
-	return nil, status.Errorf(codes.NotFound, "%s-$s", lPortId.Id, lPortId.PortId)
+	return nil, status.Errorf(codes.NotFound, "%s-%s", lPortId.Id, lPortId.PortId)
 }