diff --git a/magnum/drivers/common/templates/kubernetes/fragments/make-cert-client.sh b/magnum/drivers/common/templates/kubernetes/fragments/make-cert-client.sh
index e89ef442a2..b32ebeaa2d 100644
--- a/magnum/drivers/common/templates/kubernetes/fragments/make-cert-client.sh
+++ b/magnum/drivers/common/templates/kubernetes/fragments/make-cert-client.sh
@@ -68,7 +68,7 @@ EOF
     content_type='Content-Type: application/json'
     url="$AUTH_URL/auth/tokens"
     USER_TOKEN=`curl $VERIFY_CA -s -i -X POST -H "$content_type" -d "$auth_json" $url \
-        | grep X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
+        | grep -i X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
 
     # Get CA certificate for this cluster
     curl $VERIFY_CA -X GET \
diff --git a/magnum/drivers/common/templates/kubernetes/fragments/make-cert.sh b/magnum/drivers/common/templates/kubernetes/fragments/make-cert.sh
index 8ba16dad68..800b23c7ec 100644
--- a/magnum/drivers/common/templates/kubernetes/fragments/make-cert.sh
+++ b/magnum/drivers/common/templates/kubernetes/fragments/make-cert.sh
@@ -106,7 +106,7 @@ EOF
     content_type='Content-Type: application/json'
     url="$AUTH_URL/auth/tokens"
     USER_TOKEN=`curl $VERIFY_CA -s -i -X POST -H "$content_type" -d "$auth_json" $url \
-        | grep X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
+        | grep -i X-Subject-Token | awk '{print $2}' | tr -d '[[:space:]]'`
 
     # Get CA certificate for this cluster
     curl $VERIFY_CA -X GET \