diff --git a/share/misc/committers-ports.dot b/share/misc/committers-ports.dot
--- a/share/misc/committers-ports.dot
+++ b/share/misc/committers-ports.dot
@@ -298,7 +298,7 @@
 # Group together all the mentees for a particular mentor.
 # Keep the list sorted by mentor login.
 
-0mp -> nc
+"0mp" -> nc
 
 adamw -> ahze
 adamw -> jylefort