diff --git a/src/index.ts b/src/index.ts
index d1555b4..5c7fec7 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -195,9 +195,9 @@ class Schema {
                         errors = ([] as string[]).concat(rule.message);
                     }
 
-                    errors = errors.map(complementError(rule));
+                    const normalizeErrors = errors.map(complementError(rule));
 
-                    next(errors as NormalizedValidateError[]);
+                    next(normalizeErrors);
                 };
 
                 const res = rule.validator(rule, data.value, cb, this._options);
diff --git a/src/types.ts b/src/types.ts
index e2a3ffb..90c9c5d 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -95,8 +95,8 @@ export interface NormalizedValidateError {
 }
 
 export type ValidateCallback = (
-    errors: ValidateError[] | null,
-    fields?: Record<string, ValidateError[]> | null
+    errors: NormalizedValidateError[] | null,
+    fields?: Record<string, NormalizedValidateError[]> | null
 ) => void;
 
 export type ErrorCallback = (