diff --git a/genapp/plugin.jelly b/genapp/plugin.jelly
index ec91f629..9b2e146b 100644
--- a/genapp/plugin.jelly
+++ b/genapp/plugin.jelly
@@ -86,6 +86,7 @@
       <j:if test="${empty(currenttemplateresources)}">
         <fail>
           Found a template in ${maven.genapp.template.dir}, but it was broken.
+          Directory [${maven.genapp.template.dir}/template-resources] doesn't exist.
         </fail>
       </j:if>