diff --git a/Dockerfile.distroless b/Dockerfile.distroless
index c338851bd4..0ee184a91c 100644
--- a/Dockerfile.distroless
+++ b/Dockerfile.distroless
@@ -1,11 +1,12 @@
-ARG ARCH="amd64"
-ARG OS="linux"
 ARG DISTROLESS_ARCH="amd64"
 
 # Use DISTROLESS_ARCH for base image selection (handles armv7->arm mapping).
 FROM gcr.io/distroless/static-debian13:nonroot-${DISTROLESS_ARCH}
 # Base image sets USER to 65532:65532 (nonroot user).
 
+ARG ARCH="amd64"
+ARG OS="linux"
+
 LABEL org.opencontainers.image.authors="The Prometheus Authors"
 LABEL org.opencontainers.image.vendor="Prometheus"
 LABEL org.opencontainers.image.title="Prometheus"