diff --git a/Dockerfile b/Dockerfile
index 6cbd472..842e4de 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,6 @@ ARG GO_IMAGE=rancher/hardened-build-base:v1.21.10b1
 FROM ${BCI_IMAGE} as bci
 
 FROM ${GO_IMAGE} as builder
-ARG ARCH="amd64"
 ARG TAG=v0.7.0
 ARG PKG="github.com/k8snetworkplumbingwg/whereabouts"
 ARG SRC="github.com/k8snetworkplumbingwg/whereabouts"
diff --git a/Makefile b/Makefile
index d17a57a..a5a4eac 100644
--- a/Makefile
+++ b/Makefile
@@ -29,7 +29,6 @@ image-build:
 	docker buildx build \
 		--platform=$(ARCH) \
 		--pull \
-		--build-arg ARCH=$(ARCH) \
 		--build-arg PKG=$(PKG) \
 		--build-arg SRC=$(SRC) \
 		--build-arg TAG=$(TAG:$(BUILD_META)=) \