diff --git a/scripts/install-server.sh b/scripts/install-server.sh
index 0c23203..f21f2b8 100755
--- a/scripts/install-server.sh
+++ b/scripts/install-server.sh
@@ -37,6 +37,8 @@ mapfile -t TAGS < <(
             # extract the stable port token (ID_PATH_TAG=…)
             udevadm info -q property -n "$v" |
                 awk -F= '/^ID_PATH_TAG=/{print $2}'
+        else
+          echo "GC311 not on $v"
         fi
     done | sort
 )