diff --git a/salt/utils/macros/clone-template.sls b/salt/utils/macros/clone-template.sls
index feaabb3..73fe0ac 100644
--- a/salt/utils/macros/clone-template.sls
+++ b/salt/utils/macros/clone-template.sls
@@ -21,7 +21,7 @@ include:
   - {{ source }}.create
 
 {% set prefix = "tpl-" -%}
-{% if noprefix -%}
+{% if noprefix is defined -%}
   {%- set prefix = "" -%}
 {% endif -%}