diff --git a/bin/configure b/bin/configure
index d325fcd6b4..0a664e8e8e 100755
--- a/bin/configure
+++ b/bin/configure
@@ -396,6 +396,7 @@ export NGINX_HTTPS_PORT="${NGINX_HTTPS_PORT}"
 export PHP_PORT="${PHP_PORT}"
 export DBMS="${DBMS}"
 export BUILD_PHP="${BUILD_PHP}"
+export LE_CERT="${LE_CERT}"
 
 for SERV in ${DOCKER}; do
     SERV=$(echo "${SERV}" | sed -r 's/"([^"]*)"/\1/')
diff --git a/docker/php/docker-compose.fragment.sh b/docker/php/docker-compose.fragment.sh
index 81e6ea60da..415b646381 100644
--- a/docker/php/docker-compose.fragment.sh
+++ b/docker/php/docker-compose.fragment.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/sh
 
-if [ $LE_CERT -ne 0 ]; then
+if [ "${LE_CERT}" -ne 0 ]; then
     cat <<EOF
     php:
         build: docker/php