diff --git a/jscomp/stdlib/bytesLabels.cppo.mli b/jscomp/stdlib/bytesLabels.mli
similarity index 99%
rename from jscomp/stdlib/bytesLabels.cppo.mli
rename to jscomp/stdlib/bytesLabels.mli
index b77755c9a4..b44ecda5f3 100644
--- a/jscomp/stdlib/bytesLabels.cppo.mli
+++ b/jscomp/stdlib/bytesLabels.mli
@@ -493,9 +493,6 @@ val of_seq : char Seq.t -> t
 
 (** {2:utf_8 UTF-8} *)
 
-#ifdef BS
-#else
-
 val get_utf_8_uchar : t -> int -> Uchar.utf_decode
 (** [get_utf_8_uchar b i] decodes an UTF-8 character at index [i] in
     [b]. *)
@@ -740,8 +737,6 @@ val set_int64_le : bytes -> int -> int64 -> unit
     starting at byte index [i] to [v].
     @since 4.08
 *)
-#endif
-
 
 
 (** {1:bytes_concurrency Byte sequences and concurrency safety}
diff --git a/jscomp/stdlib/dune b/jscomp/stdlib/dune
index 118ccb6619..69b301f5d7 100644
--- a/jscomp/stdlib/dune
+++ b/jscomp/stdlib/dune
@@ -73,12 +73,6 @@
  (action
   (run cppo -D=BS %{env:CPPO_FLAGS=} %{deps} -o %{target})))
 
-(rule
- (deps bytesLabels.cppo.mli)
- (target bytesLabels.mli)
- (action
-  (run cppo -D=BS %{env:CPPO_FLAGS=} %{deps} -o %{target})))
-
 (rule
  (deps buffer.cppo.ml)
  (target buffer.ml)