diff --git a/Filer-Server-API.md b/Filer-Server-API.md
index 81b9b97..4694fb8 100644
--- a/Filer-Server-API.md
+++ b/Filer-Server-API.md
@@ -14,6 +14,7 @@ You can append to any HTTP API with &pretty=y to see a formatted json output.
 	POST /path/to/
 	//return a json format subdirectory and files listing
 	GET /path/to/
+        Accept: application/json
 ```
 Examples:
 ```bash
@@ -24,7 +25,7 @@ Examples:
 ...
 > curl -F file=@report.js "http://localhost:8888/javascript/new_name.js"    # upload the file with a different name
 {"name":"report.js","size":866,"fid":"3,034389657e","url":"http://localhost:8081/3,034389657e"}
-> curl  "http://localhost:8888/javascript/?pretty=y"            # list all files under /javascript/
+> curl  -H "Accept: application/json" "http://localhost:8888/javascript/?pretty=y"            # list all files under /javascript/
 {
   "Directory": "/javascript/",
   "Files": [