1 files changed, 1 insertions, 1 deletions
diff --git a/byterun/memory.c b/byterun/memory.c
index 276e8894b..03d728693 100644
--- a/byterun/memory.c
+++ b/byterun/memory.c
@@ -290,7 +290,7 @@ CAMLexport value caml_alloc_shr (mlsize_t wosize, tag_t tag)
   }
 #ifdef DEBUG
   {
-    unsigned long i;
+    uintnat i;
     for (i = 0; i < wosize; i++){
       Field (Val_hp (hp), i) = Debug_uninit_major;
     }