diff --git a/birdvisu/topo_v3.py b/birdvisu/topo_v3.py
index b33c782..83523fd 100644
--- a/birdvisu/topo_v3.py
+++ b/birdvisu/topo_v3.py
@@ -110,7 +110,7 @@ class VertexType(IntEnum):
 
 	# Routers first:
 	Router = 100
-	ExternalRouter = 101
+	ExtraAreaRouter = 101
 
 	# Transit networks
 	TransitNet = 200