diff --git a/root/etc/cont-init.d/50-config b/root/etc/cont-init.d/50-config
index 9ac6783..43c0cbe 100644
--- a/root/etc/cont-init.d/50-config
+++ b/root/etc/cont-init.d/50-config
@@ -7,7 +7,7 @@ mkdir -p \
 # update from git repo
 cd /var/www/localhost/heimdall
 git pull
-[[ -z "$BRANCH" ]] && \
+[[ ! -z "$BRANCH" ]] && \
 	git checkout "$BRANCH"
 
 # symlink user config