diff --git a/utils/flat_user_detail.py b/utils/flat_user_detail.py
index b2e6377..878f212 100644
--- a/utils/flat_user_detail.py
+++ b/utils/flat_user_detail.py
@@ -29,6 +29,7 @@ def calculate_dxrating(music: dict):
         logger.warning(f"unknown level: {music_id} - {level_id}", file=stderr)
         return music | {"dxRating": 0}
 
+
 data = json.loads(stdin.buffer.read())
 user_id = data["userId"]
 music_list: list[dict[str, dict]] = data["userMusicList"]
@@ -75,7 +76,7 @@ def init_chart(
                 max_=330,
             ),
             tooltip_opts=opts.TooltipOpts(is_show=False),
-            visualmap_opts=opts.VisualMapOpts(max_=16400),
+            visualmap_opts=opts.VisualMapOpts(max_=330),
         )
         .add_xaxis(xaxis_data=x_data)
         .add_yaxis(
@@ -87,6 +88,6 @@ def init_chart(
     )
 
 
-x_max = (y_data[-1] // 50 * 50) + 50
+x_max = (x_data[-1] // 50 * 50) + 50
 init_chart("value", 1, x_max).render(f"{user_id}-pc-rating-linear.html")
 init_chart("log", 1, x_max).render(f"{user_id}-pc-rating-log.html")