diff --git a/plugins/build-env/pre-build b/plugins/build-env/pre-build
index 1bf72de9b..de761a418 100755
--- a/plugins/build-env/pre-build
+++ b/plugins/build-env/pre-build
@@ -11,12 +11,12 @@ dokku config:get --global CURL_TIMEOUT > /dev/null 2>&1 || dokku config:set --gl
 
 if [[ -n $(dokku config --global --export) ]]; then
   BUILD_ENV+=$'\n'
-  BUILD_ENV+=$(< "$DOKKU_ROOT/ENV")
+  BUILD_ENV+=$(dokku config --global --export)
   BUILD_ENV+=$'\n'
 fi
 if [[ -n $(dokku config $APP --export) ]]; then
   BUILD_ENV+=$'\n'
-  BUILD_ENV+=$(< "$DOKKU_ROOT/$APP/ENV")
+  BUILD_ENV+=$(dokku config $APP --export)
   BUILD_ENV+=$'\n'
 fi