diff --git a/references/cli/debug.go b/references/cli/debug.go
index 56bf6f32e..c31158205 100644
--- a/references/cli/debug.go
+++ b/references/cli/debug.go
@@ -261,9 +261,7 @@ func wrapStepName(step workflowv1alpha1.StepStatus) string {
 }
 
 func unwrapStepName(step string) string {
-	if strings.HasPrefix(step, "  ") {
-		step = step[2:]
-	}
+	step = strings.TrimPrefix(step, "  ")
 	switch {
 	case strings.HasPrefix(step, emojiSucceed):
 		return strings.TrimPrefix(step, emojiSucceed)
diff --git a/references/cli/workflow.go b/references/cli/workflow.go
index c080c9f4c..5097b61b5 100644
--- a/references/cli/workflow.go
+++ b/references/cli/workflow.go
@@ -461,7 +461,7 @@ func (w *WorkflowArgs) selectWorkflowStep() error {
 		}
 	}
 	if len(stepsKey) == 0 {
-		return fmt.Errorf("Workflow is not start")
+		return fmt.Errorf("workflow is not start")
 	}
 
 	prompt := &survey.Select{