diff --git a/sudoers/macros.sls b/sudoers/macros.sls
index 4bbef20..f716b40 100644
--- a/sudoers/macros.sls
+++ b/sudoers/macros.sls
@@ -12,7 +12,7 @@
     - context:
       for_user: {{ for_user }}
       sudo: {{ sudo }}
-      config: {{ config }}
+      config: {{ config|tojson }}
 
 {% elif state == 'absent' %}
 /etc/sudoers.d/{{ filename }}: