diff --git a/linux/docker-ce.sls b/linux/docker-ce.sls
index f13f51e..bed3c89 100644
--- a/linux/docker-ce.sls
+++ b/linux/docker-ce.sls
@@ -2,7 +2,7 @@
 {% if grains['os'] == 'Debian' %}
   {% set LURL="deb [arch=amd64] https://download.docker.com/linux/debian " + grains['oscodename']+ " stable" %}
 {% elif grains['os'] == 'CentOS'%}
-  {% set LURL='baseurl=https://download.docker.com/linux/centos/' + grains['osmajorrelease'] + '/$basearch/stable' %}
+  {% set LURL='baseurl=https://download.docker.com/linux/centos/' + str(grains['osmajorrelease']) + '/$basearch/stable' %}
 {% endif %}
 RemovePreviousDocker:
   pkg.removed: