diff --git a/cluster/local/util.sh b/cluster/local/util.sh
index 312b7df6eb0..da262fdf249 100755
--- a/cluster/local/util.sh
+++ b/cluster/local/util.sh
@@ -18,9 +18,16 @@ function prepare-e2e() {
   echo "Local doesn't need special preparations for e2e tests" 1>&2
 }
 
+# Detect the IP for the master
+#
+# Vars set:
+#   KUBE_MASTER
+#   KUBE_MASTER_IP
+# Vars exported:
+#   KUBE_MASTER_URL
 function detect-master {
   KUBE_MASTER=localhost
   KUBE_MASTER_IP=127.0.0.1
-  KUBE_MASTER_URL="http://${KUBE_MASTER_IP}:8080"
+  export KUBE_MASTER_URL="http://${KUBE_MASTER_IP}:8080"
   echo "Using master: $KUBE_MASTER (external IP: $KUBE_MASTER_IP)"
 }
diff --git a/hack/.shellcheck_failures b/hack/.shellcheck_failures
index 64d0a1d99b0..674d40accbd 100644
--- a/hack/.shellcheck_failures
+++ b/hack/.shellcheck_failures
@@ -24,7 +24,6 @@
 ./cluster/kubemark/gce/config-default.sh
 ./cluster/kubemark/iks/config-default.sh
 ./cluster/kubemark/util.sh
-./cluster/local/util.sh
 ./cluster/log-dump/log-dump.sh
 ./cluster/pre-existing/util.sh
 ./cluster/restore-from-backup.sh