diff --git a/Dockerfile b/Dockerfile
index a71ce76..98c1d15 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ MAINTAINER Atlassian Confluence
 # Setup useful environment variables
 ENV CONFLUENCE_HOME     /var/atlassian/application-data/confluence
 ENV CONFLUENCE_INSTALL  /opt/atlassian/confluence
-ENV CONF_VERSION  6.1.1
+ENV CONF_VERSION 6.1.1
 
 LABEL Description="This image is used to start Atlassian Confluence" Vendor="Atlassian" Version="${CONF_VERSION}"