diff --git a/common/build-helper/rust.sh b/common/build-helper/rust.sh
index 9e604929ed2..2b15bde3a1e 100644
--- a/common/build-helper/rust.sh
+++ b/common/build-helper/rust.sh
@@ -25,7 +25,7 @@ if [ "$CROSS_BUILD" ]; then
 	export HOST_CFLAGS="-O2"
 
 	# Crates that use bindgen via build.rs are not cross-aware unless these are set
-	export BINDGEN_EXTRA_CLANG_ARGS="--sysroot=${XBPS_CROSS_BASE} -I${XBPS_CROSS_BASE}/usr/include"
+	export BINDGEN_EXTRA_CLANG_ARGS+=" --sysroot=${XBPS_CROSS_BASE} -I${XBPS_CROSS_BASE}/usr/include"
 else
 	unset CARGO_BUILD_TARGET
 fi