diff --git a/images/Dockerfile b/images/Dockerfile
index edfd100f211..1ed0f4a9c3e 100644
--- a/images/Dockerfile
+++ b/images/Dockerfile
@@ -5,7 +5,6 @@ ARG TARGETOS
 ARG TARGETARCH
 ARG RUNNER_VERSION
 ARG RUNNER_CONTAINER_HOOKS_VERSION=0.3.2
-ARG RUNNER_ARCH="x64"
 ARG DOCKER_VERSION=20.10.23
 
 RUN apt update -y && apt install curl unzip -y