diff --git a/contrib/linuxarm32v7.Dockerfile b/contrib/linuxarm32v7.Dockerfile
index 87de1b978..f89d7f9f8 100644
--- a/contrib/linuxarm32v7.Dockerfile
+++ b/contrib/linuxarm32v7.Dockerfile
@@ -100,7 +100,8 @@ RUN apt-get update && apt-get install -y --no-install-recommends socat inotify-t
     && rm -rf /var/lib/apt/lists/* 
 
 ENV LIGHTNINGD_DATA=/root/.lightning
-ENV LIGHTNINGD_PORT=9835
+ENV LIGHTNINGD_RPC_PORT=9835
+ENV LIGHTNINGD_PORT=9735
 
 RUN mkdir $LIGHTNINGD_DATA && \
     touch $LIGHTNINGD_DATA/config