diff --git a/src/metadataserver/user_data/templates/snippets/maas_enlist.sh b/src/metadataserver/user_data/templates/snippets/maas_enlist.sh
index cb9515c..394b0bd 100644
--- a/src/metadataserver/user_data/templates/snippets/maas_enlist.sh
+++ b/src/metadataserver/user_data/templates/snippets/maas_enlist.sh
@@ -236,7 +236,7 @@ fi
 if echo "$serverurl" | egrep -q '(^[a-z]+://|^)[a-zA-Z0-9\.\-]+($|/$)'; then
 	api_url="MAAS/api/2.0/machines/"
 else
-	api_url=`echo $serverurl | sed 's#^\(\|[a-z]\+://\)\([a-zA-Z0-9\.]\+\|\(\[[0-9a-fA-F:]\+\]\)\)\(\|\:[0-9]\+\)/##'`
+	api_url=`echo $serverurl | sed 's#^\(\|[a-z]\+://\)\([a-zA-Z0-9\.\-]\+\|\(\[[0-9a-fA-F:]\+\]\)\)\(\|\:[0-9]\+\)/##'`
 fi
 
 if [ -z "$hostname" ] && [ "$quite" != "true" ]; then