diff --git a/Dockerfile b/Dockerfile
index ad5946bf..32314ed6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,6 +1,6 @@
 FROM debian:bookworm-slim
 
-ARG TARGETARCH=amd64
+ARG TARGETARCH
 ARG TARGETPLATFORM
 
 ARG S6_VERSION="3.2.0.0"