ngx_http_sub_filter_module
diff --git a/auto/modules b/auto/modules
index dfd6f12..ee5462d 100644
--- a/auto/modules
+++ b/auto/modules
@@ -129,6 +129,11 @@
     HTTP_SRCS="$HTTP_SRCS $HTTP_SSI_SRCS"
 fi
 
+if [ $HTTP_SUB = YES ]; then
+    HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_SUB_FILTER_MODULE"
+    HTTP_SRCS="$HTTP_SRCS $HTTP_SUB_SRCS"
+fi
+
 if [ $HTTP_ADDITION = YES ]; then
     HTTP_FILTER_MODULES="$HTTP_FILTER_MODULES $HTTP_ADDITION_FILTER_MODULE"
     HTTP_SRCS="$HTTP_SRCS $HTTP_ADDITION_SRCS"