diff --git a/ptests/ptests.ml b/ptests/ptests.ml
index 27af94c1569cd497dff75177dfafbf4b72c5b26d..aa521c40b1790c1ce291811288a016fcc26ae1cc 100644
--- a/ptests/ptests.ml
+++ b/ptests/ptests.ml
@@ -163,7 +163,7 @@ let unlink ?(silent = true) file =
     Unix.unlink file
   with
   | Unix_error _ when silent -> ()
-  | Unix_error (ENOENT,_,_) -> () (* Ignore "Not such file or directory" *)
+  | Unix_error (ENOENT,_,_) -> () (* Ignore "No such file or directory" *)
   | Unix_error _ as e -> output_unix_error e
 
 let is_file_empty_or_nonexisting filename =