diff --git a/build-aux/rust-regen.sh b/build-aux/rust-regen.sh
index 5334af3f..ea54be0e 100755
--- a/build-aux/rust-regen.sh
+++ b/build-aux/rust-regen.sh
@@ -1,28 +1,27 @@
 #!/bin/sh
 #
 # Copyright (C) 2021-2023 Red Hat, Inc.  All rights reserved.
 #
 # Authors: Christine Caulfield <ccaulfie@redhat.com>
 #          Fabio M. Di Nitto <fabbione@kronosnet.org>
 #
 # This software licensed under GPL-2.0+
 #
 #
 # Regerate the FFI bindings in src/sys from the current headers
 #
 
 srcheader="$1"
 dstrs="$2"
 filter="$3"
 
 bindgen \
-	--size_t-is-usize \
 	--no-prepend-enum-name \
 	--no-layout-tests \
 	--no-doc-comments \
 	--generate functions,types,vars \
 	--fit-macro-constant-types \
 	--allowlist-var=$filter.*  \
 	--allowlist-type=.* \
 	--allowlist-function=.* \
 	$srcheader -o $dstrs