diff --git a/src/class/Util.ts b/src/class/Util.ts
index cff693d..5f67163 100644
--- a/src/class/Util.ts
+++ b/src/class/Util.ts
@@ -74,7 +74,7 @@ export default class Util {
         returnArray.push(Number(file));
       }
     }
-    if (returnArray.length > 1) return undefined;
+    if (returnArray.length < 1) return undefined;
     return returnArray;
   }
 
diff --git a/src/go/getUserByUid/getUserByUid.go b/src/go/getUserByUid/getUserByUid.go
index 1a64881..8d3b22d 100644
--- a/src/go/getUserByUid/getUserByUid.go
+++ b/src/go/getUserByUid/getUserByUid.go
@@ -7,7 +7,7 @@ import (
 )
 
 func main() {
-	if len(os.Args) > 1 {
+	if len(os.Args) < 1 {
 		fmt.Println("-1")
 		os.Exit(0)
 	}