diff --git a/README.md b/README.md
index c5f3f5b..6b31710 100644
--- a/README.md
+++ b/README.md
@@ -32,12 +32,13 @@ Download the `webp-server` from [release](https://github.com/webp-sh/webp_server
 The default `config.json` may look like this.
 ```json
 {
-	"HOST": "127.0.0.1",
-	"PORT": "3333",
-	"QUALITY": "80",
-	"IMG_PATH": "/path/to/pics",
-	"EXHAUST_PATH": "/path/to/exhaust",
-	"ALLOWED_TYPES": ["jpg","png","jpeg"]
+  "HOST": "127.0.0.1",
+  "PORT": "3333",
+  "QUALITY": "80",
+  "IMG_PATH": "/path/to/pics",
+  "EXHAUST_PATH": "/path/to/exhaust",
+  "ALLOWED_TYPES": ["jpg","png","jpeg","bmp"],
+  "ENABLE_AVIF": false
 }
 ```
 
diff --git a/config.json b/config.json
index b3385c1..24805a9 100644
--- a/config.json
+++ b/config.json
@@ -4,10 +4,6 @@
   "QUALITY": "80",
   "IMG_PATH": "./pics",
   "EXHAUST_PATH": "./exhaust",
-  "ALLOWED_TYPES": [
-    "jpg",
-    "png",
-    "jpeg",
-    "bmp"
-  ]
+  "ALLOWED_TYPES": ["jpg","png","jpeg","bmp"],
+  "ENABLE_AVIF": false
 }
\ No newline at end of file