2 files changed, 2 insertions, 2 deletions
diff --git a/base.opam b/base.opam
index bbca95b..a614a8e 100644
--- a/base.opam
+++ b/base.opam
@@ -1,5 +1,5 @@
 opam-version: "2.0"
-version: "v0.16.2"
+version: "v0.16.3"
 maintainer: "Jane Street developers"
 authors: ["Jane Street Group, LLC"]
 homepage: "https://github.com/janestreet/base"
diff --git a/src/int_math_stubs.c b/src/int_math_stubs.c
index 64da39d..4e81623 100644
--- a/src/int_math_stubs.c
+++ b/src/int_math_stubs.c
@@ -189,7 +189,7 @@ CAMLprim value Base_int_math_nativeint_ctz(value v) {
   return Val_int(Base_int_math_nativeint_ctz_unboxed(Nativeint_val(v)));
 }
 
-CAMLprim value __attribute__((weak))
+CAMLprim CAMLweakdef value
 caml_csel_value(value v_cond, value v_true, value v_false) {
   return (Bool_val(v_cond) ? v_true : v_false);
 }