diff --git a/manifests/init.pp b/manifests/init.pp
index 97206d0e4605b7b7839ff6c2b8df6ee8415a620b..5df07257f755184d29e5c13c08a81caabc1782ca 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -71,7 +71,7 @@ class comptoir (
       cwd         => $comptoir_dir,
       user        => $comptoir_user,
       environment => [ 'HOME=/home/comptoir' ],
-      onlyif      => "grep '//COMPTOIR-DEBUG' ${_file_app_php}",
+      onlyif      => "/bin/grep '//COMPTOIR-DEBUG' ${_file_app_php}",
     }
   }