diff --git a/apps/emqx_rule_engine/src/emqx_rule_engine_schema.erl b/apps/emqx_rule_engine/src/emqx_rule_engine_schema.erl
index ba516bfa7..5d72d5a6d 100644
--- a/apps/emqx_rule_engine/src/emqx_rule_engine_schema.erl
+++ b/apps/emqx_rule_engine/src/emqx_rule_engine_schema.erl
@@ -182,6 +182,7 @@ rule_name() ->
     {"name", sc(binary(),
         #{ desc => "The name of the rule"
          , default => ""
+         , nullable => false
          , example => "foo"
          })}.