diff --git a/src/http/modules/ngx_http_range_filter_module.c b/src/http/modules/ngx_http_range_filter_module.c
index 82c202d33..6143a8786 100644
--- a/src/http/modules/ngx_http_range_filter_module.c
+++ b/src/http/modules/ngx_http_range_filter_module.c
@@ -22,7 +22,7 @@
  * ... data ...
  *
  *
- * the mutlipart format:
+ * the multipart format:
  *
  * "HTTP/1.0 206 Partial Content" CRLF
  * ... header ...