diff --git a/templates/resources/preheat_instance.md.tmpl b/templates/resources/preheat_instance.md.tmpl
index d5b1e35..c02d86e 100644
--- a/templates/resources/preheat_instance.md.tmpl
+++ b/templates/resources/preheat_instance.md.tmpl
@@ -22,7 +22,7 @@ For example, the {{ .SchemaMarkdown }} template can be used to replace manual sc
 
 ### Usage with Authentication
 
-{{tffile "examples/resources/harbor_preheat_instance/authentication.tf"}}
+{{tffile "examples/resources/harbor_preheat_instance/authentification.tf"}}
 
 ## Schema