diff --git a/ente/Dockerfile b/ente/Dockerfile
index 469a3d3d1..c5e8fd78f 100644
--- a/ente/Dockerfile
+++ b/ente/Dockerfile
@@ -53,8 +53,9 @@ RUN chmod 744 /ha_lsio.sh && \
     rm /ha_lsio.sh
 
 # --- MinIO, psql client etc. (unchanged) ---
+ARG BUILD_ARCH
 RUN set -eux; \
-    if [ "$BUILD_ARCH" = "aarch64" ]; then BUILD_ARCH="arm64"; fi
+    if [ "$BUILD_ARCH" = "aarch64" ]; then BUILD_ARCH="arm64"; fi && \
     apk add --no-cache \
         bash curl ca-certificates wget jq tini postgresql15-client; \
     curl -fsSL https://dl.min.io/server/minio/release/linux-"$BUILD_ARCH"/minio -o /usr/local/bin/minio; \