diff --git a/docs/content/middlewares/ipwhitelist.md b/docs/content/middlewares/ipwhitelist.md
index 79706d59d..cf7b64b2f 100644
--- a/docs/content/middlewares/ipwhitelist.md
+++ b/docs/content/middlewares/ipwhitelist.md
@@ -66,7 +66,7 @@ http:
 
 ### `sourceRange`
 
-The `sourceRange` option sets the allowed IPs (or ranges of allowed IPs).
+The `sourceRange` option sets the allowed IPs (or ranges of allowed IPs by using CIDR notation).
 
 ### `ipStrategy`