diff --git a/scripts/parse_performance_metrics.py b/scripts/parse_performance_metrics.py
index 5759392f..98ce6c2b 100755
--- a/scripts/parse_performance_metrics.py
+++ b/scripts/parse_performance_metrics.py
@@ -89,7 +89,8 @@ def generate_report(metrics: Dict[str, List[float]]) -> str:
         report.append(f"- **Average Launch Time**: {avg_launch:.2f}ms")
         report.append(f"  - Min: {min(metrics['launch_time']):.2f}ms")
         report.append(f"  - Max: {max(metrics['launch_time']):.2f}ms")
-        report.append(f"  - Std Dev: {statistics.stdev(metrics['launch_time']):.2f}ms\n")
+        std_dev = statistics.stdev(metrics['launch_time']) if len(metrics['launch_time']) > 1 else 0.0
+        report.append(f"  - Std Dev: {std_dev:.2f}ms\n")
     
     # Memory usage
     if metrics['memory_usage']: