diff --git a/ocaml/Qmcchem_edit.ml b/ocaml/Qmcchem_edit.ml
index 5d08a42..0258f87 100644
--- a/ocaml/Qmcchem_edit.ml
+++ b/ocaml/Qmcchem_edit.ml
@@ -349,7 +349,7 @@ let command () =
   let m = Command_line.get "method" in
   let e = Command_line.get "ref-energy" in
   let et = Command_line.get "trial-energy" in
-  let s = Command_line.get "stop-time" in
+  let s = Command_line.get "sampling" in
   let ts = Command_line.get "time-step" in
   let w = Command_line.get "walk-num" in
   let wt = Command_line.get "walk-num-tot" in