diff --git a/tools/proto_format/proto_format.sh b/tools/proto_format/proto_format.sh
index 2f64f9eb1cac8..74e0a8992f722 100755
--- a/tools/proto_format/proto_format.sh
+++ b/tools/proto_format/proto_format.sh
@@ -22,7 +22,7 @@ read -ra BAZEL_BUILD_OPTIONS <<< "${BAZEL_BUILD_OPTIONS:-}"
 
 if [[ "$2" == "--test" ]]; then
     echo "protoxform_test..."
-    ./tools/protoxform/protoxform_test.sh
+    BAZEL_BUILD_OPTIONS="${BAZEL_BUILD_OPTIONS[*]}" ./tools/protoxform/protoxform_test.sh
     bazel test "${BAZEL_BUILD_OPTIONS[@]}" //tools/protoxform:merge_active_shadow_test
 fi