diff --git a/scripts/build_images.sh b/scripts/build_images.sh
index a68bf03..846e412 100755
--- a/scripts/build_images.sh
+++ b/scripts/build_images.sh
@@ -101,7 +101,7 @@ for image in "${IMAGES[@]}"; do
     continue
   fi
 
-  run_trace $DRY_RUN depot build --project "gb3p8xrshk" --load --platform linux/arm64,linux/amd64,linux/arm/v7 --save --metadata-file="build_{$image}.json" \
+  run_trace $DRY_RUN depot build --project "gb3p8xrshk" --load --platform linux/arm64,linux/amd64,linux/arm/v7 --save --metadata-file="build_${image}.json" \
     "${docker_flags[@]}" \
     "$image_dir" \
     --file="$image_path" \