diff --git a/jenkins/host/start_build b/jenkins/host/start_build
index c3df393..555b8a2 100755
--- a/jenkins/host/start_build
+++ b/jenkins/host/start_build
@@ -22,7 +22,7 @@
 OSM_JENKINS=$(dirname $HERE)
 . $OSM_JENKINS/common/all_funcs
 
-[ $# -eq 1 ] || FATAL "arg is MDG name"
+[ $# -lt 1 ] && FATAL "arg is MDG name"
 
 export OSM_MDG=$1
 shift