diff --git a/models/actions/task.go b/models/actions/task.go
index 1f49444164..67f2b78265 100644
--- a/models/actions/task.go
+++ b/models/actions/task.go
@@ -331,7 +331,7 @@ func CreateTaskForRunner(ctx context.Context, runner *ActionRunner) (*ActionTask
 			steps[i] = &ActionTaskStep{
 				Name:   v.String(),
 				TaskID: task.ID,
-				Number: int64(i),
+				Index:  int64(i),
 				RepoID: task.RepoID,
 				Status: StatusWaiting,
 			}
@@ -419,7 +419,7 @@ func UpdateTaskByState(ctx context.Context, state *runnerv1.TaskState) (*ActionT
 	prevStepDone := true
 	for _, step := range task.Steps {
 		var result runnerv1.Result
-		if v, ok := stepStates[step.Number]; ok {
+		if v, ok := stepStates[step.Index]; ok {
 			result = v.Result
 			step.LogIndex = v.LogIndex
 			step.LogLength = v.LogLength
diff --git a/models/actions/task_step.go b/models/actions/task_step.go
index e512a39279..d70fcc222e 100644
--- a/models/actions/task_step.go
+++ b/models/actions/task_step.go
@@ -15,8 +15,8 @@ import (
 type ActionTaskStep struct {
 	ID        int64
 	Name      string `xorm:"VARCHAR(255)"`
-	TaskID    int64  `xorm:"index unique(task_number)"`
-	Number    int64  `xorm:"index unique(task_number)"`
+	TaskID    int64  `xorm:"index unique(task_index)"`
+	Index     int64  `xorm:"index unique(task_index)"`
 	RepoID    int64  `xorm:"index"`
 	Status    Status `xorm:"index"`
 	LogIndex  int64
diff --git a/models/migrations/v1_19/v238.go b/models/migrations/v1_19/v238.go
index e4aaf8fbbf..0afff80a13 100644
--- a/models/migrations/v1_19/v238.go
+++ b/models/migrations/v1_19/v238.go
@@ -131,8 +131,8 @@ func AddActionsTables(x *xorm.Engine) error {
 	type ActionTaskStep struct {
 		ID        int64
 		Name      string `xorm:"VARCHAR(255)"`
-		TaskID    int64  `xorm:"index unique(task_number)"`
-		Number    int64  `xorm:"index unique(task_number)"`
+		TaskID    int64  `xorm:"index unique(task_index)"`
+		Index     int64  `xorm:"index unique(task_index)"`
 		RepoID    int64  `xorm:"index"`
 		Status    int    `xorm:"index"`
 		LogIndex  int64