diff --git a/core/setup/file.go b/core/setup/file.go
index 768fec49f..189977317 100644
--- a/core/setup/file.go
+++ b/core/setup/file.go
@@ -25,6 +25,7 @@ func File(c *Controller) (middleware.Middleware, error) {
 						zones.Z[n].Notify()
 					}
 				})
+				return nil
 			})
 		}
 	}