diff --git a/sql.go b/sql.go
index e966a6f..a5830a4 100644
--- a/sql.go
+++ b/sql.go
@@ -962,15 +962,14 @@ func getSQLListID64(q string) []int64 {
 
 func cleanupJobData() {
 	var jobID int64
-	jobStmt, err := db.Prepare(`SELECT o.id FROM obj o WHERE o.obj_type_id = ?;`)
+	jobStmt, err := db.Prepare(`SELECT o.id FROM obj o WHERE o.obj_type_id = ` + strconv.FormatInt(cacheObjType[`job`], 10) + `;`)
 	logOnError(err, "cleanupJobData : prepare jobStmt")
 	if err != nil {
 		jobStmt.Close()
 		return
 	}
 
-	jobID = cacheObjType[`job`]
-	jobs, err := jobStmt.Query(&jobID)
+	jobs, err := jobStmt.Query()
 	logOnError(err, "cleanupJobData : query jobStmt")
 	if err != nil {
 		jobStmt.Close()
@@ -978,7 +977,7 @@ func cleanupJobData() {
 	}
 
 	for jobs.Next() {
-		err = rows.Scan(&jobID)
+		err = jobs.Scan(&jobID)
 		logOnError(err, "cleanupJobData : scan jobStmt")
 		if err != nil {
 			return