diff --git a/docker/rootfs/usr/local/nginx/conf/nginx.conf b/docker/rootfs/usr/local/nginx/conf/nginx.conf
index bd8826282..a392b5372 100644
--- a/docker/rootfs/usr/local/nginx/conf/nginx.conf
+++ b/docker/rootfs/usr/local/nginx/conf/nginx.conf
@@ -58,7 +58,7 @@ http {
 
         # vod caches
         vod_metadata_cache metadata_cache 512m;
-        vod_mapping_cache mapping_cache 5m;
+        vod_mapping_cache mapping_cache 5m 10m;
 
         # gzip manifests
         gzip on;