diff --git a/backend/main.go b/backend/main.go
index 3eb6350..99ee6b2 100644
--- a/backend/main.go
+++ b/backend/main.go
@@ -613,7 +613,7 @@ func connect() {
 			})
 
 		case "check-registered":
-			err := db.QueryRow("SELECT IFNULL(esignid, 0) AS result FROM esign WHERE employeeid = ?", data).Scan(&result)
+			err := db.QueryRow("SELECT IFNULL(e.esignid, 0) AS result FROM esign e LEFT JOIN employee emp ON e.employeeid = emp.employeeid WHERE emp.employeename = ?", data).Scan(&result)
 			if err != nil {
 				if err == sql.ErrNoRows {
 					result = "0"