diff --git a/doc/md/schema-fields.md b/doc/md/schema-fields.md
index a106d419c..a48ec6d55 100755
--- a/doc/md/schema-fields.md
+++ b/doc/md/schema-fields.md
@@ -291,6 +291,7 @@ The framework provides a few built-in validators for each type:
   - `MinLen(i)`
   - `MaxLen(i)`
   - `Match(regexp.Regexp)`
+  - `NotEmpty`
 
 ## Optional