diff --git a/resources/leiningen/new/simple_app/src/root_ns/core.clj b/resources/leiningen/new/simple_app/src/root_ns/core.clj
index 8d76024..9253827 100644
--- a/resources/leiningen/new/simple_app/src/root_ns/core.clj
+++ b/resources/leiningen/new/simple_app/src/root_ns/core.clj
@@ -33,4 +33,6 @@
   [& args]
   (log/info "{{name}} is starting up ...")
   (mount/start-with-args args)
+  (when (:dev? config)
+    (log/warn "*** Running in development mode! ***"))
   (log/info "Ready!"))