diff --git a/salt/nginx/etc/nginx.conf b/salt/nginx/etc/nginx.conf
index dd599abf9..05e935caa 100644
--- a/salt/nginx/etc/nginx.conf
+++ b/salt/nginx/etc/nginx.conf
@@ -1,7 +1,7 @@
 {%- set role = grains.id.split('_') | last %}
 {%- if role == 'fleet' %}
-	{% set main_int = salt['pillar.get']('host:mainint') %}
-	{% set main_ip = salt['grains.get']('ip_interfaces').get(main_int)[0] %}
+	{% set mainint = salt['pillar.get']('host:mainint') %}
+	{% set main_ip = salt['grains.get']('ip_interfaces:' ~ mainint)[0] %}
 {%- endif %}
 
 {%- set manager_ip = salt['pillar.get']('manager:main_ip', '') %}