diff --git a/adk/multiagent/plan-execute-replan/agent/agent.go b/adk/multiagent/plan-execute-replan/agent/agent.go
index fe41a40..4ebb7f7 100644
--- a/adk/multiagent/plan-execute-replan/agent/agent.go
+++ b/adk/multiagent/plan-execute-replan/agent/agent.go
@@ -63,7 +63,7 @@ func formatInput(in []adk.Message) string {
 func formatExecutedSteps(in []planexecute.ExecutedStep) string {
 	var sb strings.Builder
 	for idx, m := range in {
-		sb.WriteString(fmt.Sprintf("## %d. Step: %v\n  Result: %v\n\n", idx+1, m.Step, m.Result))
+		_, _ = fmt.Fprintf(&sb, "## %d. Step: %v\n  Result: %v\n\n", idx+1, m.Step, m.Result)
 	}
 	return sb.String()
 }