diff --git a/src/http/modules/ngx_http_fastcgi_module.c b/src/http/modules/ngx_http_fastcgi_module.c
index a861203..2d288ce 100644
--- a/src/http/modules/ngx_http_fastcgi_module.c
+++ b/src/http/modules/ngx_http_fastcgi_module.c
@@ -1177,6 +1177,11 @@
 
         while (body) {
 
+            if (ngx_buf_special(body->buf)) {
+                body = body->next;
+                continue;
+            }
+
             if (body->buf->in_file) {
                 file_pos = body->buf->file_pos;