diff --git a/typescript/core/base.ts b/typescript/core/base.ts
index f729cd950..a060901a7 100644
--- a/typescript/core/base.ts
+++ b/typescript/core/base.ts
@@ -349,7 +349,7 @@ export interface _base {
 
     isNotEmptyString: (string: string) => boolean;
 
-    isEmptyString: (string: string) => boolean;
+    isEmptyString: (string: any) => boolean;
 
     encrypt: (type: string, text: string, key: string) => string;