diff --git a/Dockerfile.armhf b/Dockerfile.armhf
index 29feb5f..a27651c 100644
--- a/Dockerfile.armhf
+++ b/Dockerfile.armhf
@@ -91,7 +91,7 @@ RUN \
  rm /xrdp.deb && \
  echo "**** install docker ****" && \
  curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add - && \
- add-apt-repository "deb [arch=arm] https://download.docker.com/linux/ubuntu bionic stable" && \
+ add-apt-repository "deb [arch=armhf] https://download.docker.com/linux/ubuntu bionic stable" && \
  apt-get update && \
  apt-get install -y --no-install-recommends \
 	docker-ce-cli && \