diff --git a/src/utils/validateUtil.ts b/src/utils/validateUtil.ts
index 3522f4cea..5717b6acd 100644
--- a/src/utils/validateUtil.ts
+++ b/src/utils/validateUtil.ts
@@ -90,7 +90,7 @@ async function validateRule(
     }
   }
 
-  if (!result.length && subRuleField) {
+  if (!result.length && subRuleField && Array.isArray(value) && value.length > 0) {
     const subResults: string[][] = await Promise.all(
       (value as StoreValue[]).map((subValue: StoreValue, i: number) =>
         validateRule(`${name}.${i}`, subValue, subRuleField, options, messageVariables),