diff --git a/hrp/pkg/uixt/action.go b/hrp/pkg/uixt/action.go
index b5c7162a..696f35fc 100644
--- a/hrp/pkg/uixt/action.go
+++ b/hrp/pkg/uixt/action.go
@@ -340,7 +340,7 @@ func (dExt *DriverExt) DoAction(action MobileAction) error {
 	case ACTION_ScreenShot:
 		// take screenshot
 		log.Info().Msg("take screenshot for current screen")
-		_, err := dExt.TakeScreenShot(builtin.GenNameWithTimestamp("step_%d_screenshot"))
+		_, err := dExt.TakeScreenShot(builtin.GenNameWithTimestamp("%d_screenshot"))
 		return err
 	case ACTION_StartCamera:
 		return dExt.Driver.StartCamera()
diff --git a/hrp/pkg/uixt/opencv.go b/hrp/pkg/uixt/opencv.go
index e1b3cbdb..06a6122d 100644
--- a/hrp/pkg/uixt/opencv.go
+++ b/hrp/pkg/uixt/opencv.go
@@ -101,7 +101,7 @@ func (dExt *DriverExt) FindAllImageRect(search string) (rects []image.Rectangle,
 	if bufSearch, err = getBufFromDisk(search); err != nil {
 		return nil, err
 	}
-	if bufSource, err = dExt.TakeScreenShot(builtin.GenNameWithTimestamp("step_%d_cv")); err != nil {
+	if bufSource, err = dExt.TakeScreenShot(builtin.GenNameWithTimestamp("%d_cv")); err != nil {
 		return nil, err
 	}
 
diff --git a/hrp/step_mobile_ui.go b/hrp/step_mobile_ui.go
index 344c15bb..83d8f5f4 100644
--- a/hrp/step_mobile_ui.go
+++ b/hrp/step_mobile_ui.go
@@ -610,7 +610,7 @@ func runStepMobileUI(s *SessionRunner, step *TStep) (stepResult *StepResult, err
 
 		// take screenshot after each step
 		_, err := uiDriver.TakeScreenShot(
-			builtin.GenNameWithTimestamp("step_%d_") + step.Name)
+			builtin.GenNameWithTimestamp("%d_step_") + step.Name)
 		if err != nil {
 			log.Error().Err(err).Str("step", step.Name).Msg("take screenshot failed on step finished")
 		}