diff --git a/php_fpm/Dockerfile b/php_fpm/Dockerfile
index 1565a33..e434713 100644
--- a/php_fpm/Dockerfile
+++ b/php_fpm/Dockerfile
@@ -30,7 +30,7 @@ ENV NAMELESS_PATH_HIDE=true
 ENV NAMELESS_FRIENDLY_URLS=true NAMELESS_FRIENDLY_URLS_HIDE=true
 
 ARG NAMELESS_DOWNLOAD_VERSION=ERROR_NOT_SPECIFIED
-ENV NAMELESS_DOWNLOAD_VERSION=NAMELESS_DOWNLOAD_VERSION
+ENV NAMELESS_DOWNLOAD_VERSION=$NAMELESS_DOWNLOAD_VERSION
 
 ENV PHP_PM="ondemand" \
     PHP_PM_MAX_CHILDREN="16" \