diff --git a/src/http/ngx_http_file_cache.c b/src/http/ngx_http_file_cache.c
index 2fefe095b..4dc2b5741 100644
--- a/src/http/ngx_http_file_cache.c
+++ b/src/http/ngx_http_file_cache.c
@@ -161,6 +161,7 @@ ngx_http_file_cache_new(ngx_http_request_t *r)
 
     r->cache = c;
     c->file.log = r->connection->log;
+    c->file.fd = NGX_INVALID_FILE;
 
     return NGX_OK;
 }