diff --git a/CHANGES.md b/CHANGES.md
index 25e71e0..9ac4bdf 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,7 +4,7 @@
 
 - `get_free_and_total_mem`.
 - Multiple missing `sexp_of` conversions.
-- `cuda_call_callback` to help in debugging.
+- `cuda_call_hook` to help in debugging.
 - `is_success` functions.
 
 ## [0.5.0] 2024-09-25
diff --git a/cudajit.ml b/cudajit.ml
index 7aae13f..79283da 100644
--- a/cudajit.ml
+++ b/cudajit.ml
@@ -96,10 +96,10 @@ let cuda_error_printer = function
 
 let () = Printexc.register_printer cuda_error_printer
 let is_success = function CUDA_SUCCESS -> true | _ -> false
-let cuda_call_callback : (message:string -> status:result -> unit) option ref = ref None
+let cuda_call_hook : (message:string -> status:result -> unit) option ref = ref None
 
 let check message status =
-  (match !cuda_call_callback with None -> () | Some callback -> callback ~message ~status);
+  (match !cuda_call_hook with None -> () | Some callback -> callback ~message ~status);
   if status <> CUDA_SUCCESS then raise @@ Cuda_error { status; message }
 
 let init ?(flags = 0) () = check "cu_init" @@ Cuda.cu_init flags
diff --git a/cudajit.mli b/cudajit.mli
index 052568c..ed45a73 100644
--- a/cudajit.mli
+++ b/cudajit.mli
@@ -56,7 +56,7 @@ exception Cuda_error of { status : result; message : string }
 
 val is_success : result -> bool
 
-val cuda_call_callback : (message:string -> status:result -> unit) option ref
+val cuda_call_hook : (message:string -> status:result -> unit) option ref
 (** The function called after every {!Cuda_ffi.Bindings.Functions} call. [message] is the snake-case
     variant of the corresponding CUDA function name. *)
 
diff --git a/test/saxpy.ml b/test/saxpy.ml
index c0c1bc0..9d5b316 100644
--- a/test/saxpy.ml
+++ b/test/saxpy.ml
@@ -16,11 +16,11 @@ let%expect_test "SAXPY" =
   let num_blocks = 32 in
   let num_threads = 128 in
   let module Cu = Cudajit in
+  Cu.cuda_call_hook := Some (fun ~message ~status:_ -> Printf.printf "%s\n" message);
   let prog =
     Cu.Nvrtc.compile_to_ptx ~cu_src:kernel ~name:"saxpy" ~options:[ "--use_fast_math" ]
       ~with_debug:true
   in
-  Cu.cuda_call_callback := Some (fun ~message ~status:_ -> Printf.printf "%s\n" message);
   Cu.init ();
   if Cu.Device.get_count () > 0 then (
     let device = Cu.Device.get ~ordinal:0 in
@@ -1449,4 +1449,5 @@ let%expect_test "SAXPY" =
       5.1 * 4087.0 + 8174.0 = 29017.70; 5.1 * 4088.0 + 8176.0 = 29024.80; 5.1 * 4089.0 + 8178.0 = 29031.90;
       5.1 * 4090.0 + 8180.0 = 29039.00; 5.1 * 4091.0 + 8182.0 = 29046.10; 5.1 * 4092.0 + 8184.0 = 29053.20;
       5.1 * 4093.0 + 8186.0 = 29060.30; 5.1 * 4094.0 + 8188.0 = 29067.40; 5.1 * 4095.0 + 8190.0 = 29074.50;
-      |}])
+      |}]);
+  Cu.cuda_call_hook := None