diff --git a/utility.ts b/utility.ts
index ffaef1c..c45e56b 100644
--- a/utility.ts
+++ b/utility.ts
@@ -1,4 +1,7 @@
-export function guardStringNotEmpty(data: any, cb: (data: string) => void): void {
-  if (typeof data != "string" || data != "") return;
+export function guardStringNotEmpty(
+  data: any,
+  cb: (data: string) => void
+): void {
+  if (typeof data != "string" || data == "") return;
   cb(data);
 }