diff --git a/miner-api/internal/orm/prover_task.go b/miner-api/internal/orm/prover_task.go
index 08633614c2..2ea635c910 100644
--- a/miner-api/internal/orm/prover_task.go
+++ b/miner-api/internal/orm/prover_task.go
@@ -61,14 +61,14 @@ func (o *ProverTask) GetProverTasksByHashes(ctx context.Context, hashes []string
 	return proverTasks, nil
 }
 
+// GetProverTasksByProver returns prover-tasks by the given prover's public key.
 func (o *ProverTask) GetProverTasksByProver(ctx context.Context, pubkey string) ([]*ProverTask, error) {
 	var proverTasks []*ProverTask
-	err := o.db.WithContext(ctx).Model(&ProverTask{}).Where(&ProverTask{ProverPublicKey: pubkey}).Order("created_at asc").Find(&proverTasks).Error
+	err := o.db.WithContext(ctx).Model(&ProverTask{}).Where(&ProverTask{ProverPublicKey: pubkey}).Order("id asc").Find(&proverTasks).Error
 	if err != nil {
 		return nil, fmt.Errorf("ProverTask.GetProverTasksByProver error: %w, prover %s", err, pubkey)
 	}
 	return proverTasks, nil
-
 }
 
 // SetProverTask updates or inserts a ProverTask record.
diff --git a/miner-api/test/prover_task_test.go b/miner-api/test/prover_task_test.go
index d1edbef1de..4271bce38a 100644
--- a/miner-api/test/prover_task_test.go
+++ b/miner-api/test/prover_task_test.go
@@ -61,14 +61,14 @@ func TestProverTaskAPIs(t *testing.T) {
 func testGetProverTasksByProver(t *testing.T) {
 	var tasks []*orm.ProverTask
 	getResp(t, fmt.Sprintf("%s/tasks?pubkey=%s", basicPath, proverPubkey), &tasks)
-	assert.Equal(t, "2", tasks[0].TaskID)
-	assert.Equal(t, "1", tasks[1].TaskID)
+	assert.Equal(t, task2, *tasks[0])
+	assert.Equal(t, task1, *tasks[1])
 }
 
 func testGetTotalRewards(t *testing.T) {
-	rewards := make(map[string]decimal.Decimal)
+	rewards := make(map[string]int)
 	getResp(t, fmt.Sprintf("%s/total_rewards?pubkey=%s", basicPath, proverPubkey), &rewards)
-	assert.Equal(t, decimal.NewFromInt(22), rewards["rewards"])
+	assert.Equal(t, 22, rewards["rewards"])
 }
 
 func testGetProverTask(t *testing.T) {