diff --git a/ghost/arm/Dockerfile b/ghost/arm/Dockerfile
index ccfb7a3..08bbec1 100644
--- a/ghost/arm/Dockerfile
+++ b/ghost/arm/Dockerfile
@@ -5,12 +5,12 @@
 FROM vimagick/alpine-arm:edge
 MAINTAINER kev <noreply@datageek.info>
 
-ENV GHOST_VERSION 0.7.2
-ENV GHOST_URL https://github.com/TryGhost/Ghost/archive/$GHOST_VERSION.tar.gz
+ENV GHOST_VER 0.7.2
+ENV GHOST_URL https://github.com/TryGhost/Ghost/archive/$GHOST_VER.tar.gz
 ENV GHOST_SOURCE /usr/src/ghost
 ENV GHOST_CONTENT /var/lib/ghost
 
-WORKDIR $GHOST_SRC
+WORKDIR $GHOST_SOURCE
 VOLUME $GHOST_CONTENT
 
 RUN set -ex \