diff --git a/Trajectories/extract_component.py b/Trajectories/extract_component.py
index 81e1e3cddf88a2b20cbde6284d070758ffd74efb..df0eac89422c635d742c3c0d4c156ad0b514572c 100755
--- a/Trajectories/extract_component.py
+++ b/Trajectories/extract_component.py
@@ -20,7 +20,7 @@ else:
 g.set_directed(False)
 
 for v in g.vertices():
-    if g.vp.name[v] == "109114663": break
+    if g.vp.name[v] == sys.argv[2]: break
 
 label = topology.label_out_component(g, v)
 g.set_vertex_filter(label)