diff --git a/bin/push.ml b/bin/push.ml
index 2ecad08..ed381bb 100644
--- a/bin/push.ml
+++ b/bin/push.ml
@@ -29,7 +29,7 @@ module Source = Yocaml_git.From_identity (Yocaml_unix.Runtime)
 let usage =
   Fmt.str
     "%s [--message <message>] [--author <author>] [--email <email>] -r \
-     <repository>"
+     <repository>#<branch>"
     Sys.argv.(0)
 
 let specification =