diff --git a/tests/unit/test_asset_quality_scoring.py b/tests/unit/test_asset_quality_scoring.py
index 103adf697..d4293f6ce 100755
--- a/tests/unit/test_asset_quality_scoring.py
+++ b/tests/unit/test_asset_quality_scoring.py
@@ -322,7 +322,7 @@ class TestScoreStability:
         base = np.random.randint(100, 150, (60, 60, 3), dtype=np.uint8)
         # 5 帧相似的
         frames = []
-        for i in range(5):
+        for _ in range(5):
             f = base.copy()
             # 轻微变化
             f = np.clip(f.astype(int) + np.random.randint(-5, 6, f.shape), 0, 255).astype(np.uint8)