diff --git a/docker/autoware/Dockerfile b/docker/autoware/Dockerfile
index c376ecaa186..2e6ed08a779 100644
--- a/docker/autoware/Dockerfile
+++ b/docker/autoware/Dockerfile
@@ -44,7 +44,6 @@ FROM base as prebuilt
 SHELL ["/bin/bash", "-o", "pipefail", "-c"]
 ARG ROS_DISTRO
 ARG SETUP_ARGS
-ARG ROS_DISTRO
 ENV CCACHE_DIR="/var/tmp/ccache"
 ENV CC="/usr/lib/ccache/gcc"
 ENV CXX="/usr/lib/ccache/g++"