diff --git a/docs/en/get_started/customization.md b/docs/en/get_started/customization.md
index 77f5cd5e34..3f31ee493d 100644
--- a/docs/en/get_started/customization.md
+++ b/docs/en/get_started/customization.md
@@ -298,8 +298,6 @@ def get_pg_loss_reducer(
 - Dr.GRPO: Divide by a constant instead of effective token count
 - Custom loss normalization strategies
 
-**Example**: `examples/DrGRPO/custom_reducer.py:get_pg_loss_reducer`
-
 ---
 
 ### 12. Reward Post-Processing (`--custom-reward-post-process-path`)
diff --git a/docs/zh/get_started/customization.md b/docs/zh/get_started/customization.md
index 5b95f05463..fd067c04c9 100644
--- a/docs/zh/get_started/customization.md
+++ b/docs/zh/get_started/customization.md
@@ -298,8 +298,6 @@ def get_pg_loss_reducer(
 - Dr.GRPO：除以常数而非有效 token 数
 - 自定义损失归一化策略
 
-**示例**: `examples/DrGRPO/custom_reducer.py:get_pg_loss_reducer`
-
 ---
 
 ### 12. 奖励后处理 (`--custom-reward-post-process-path`)
diff --git a/slime/utils/arguments.py b/slime/utils/arguments.py
index 6efe85eae7..a7059bba87 100644
--- a/slime/utils/arguments.py
+++ b/slime/utils/arguments.py
@@ -1050,7 +1050,7 @@ def add_algo_arguments(parser):
                 "--custom-pg-loss-reducer-function-path",
                 type=str,
                 default=None,
-                help="Path to a custom reducer function for pg_loss only. When set, pg_loss will use this custom reducer while other metrics (pg_clipfrac, ppo_kl, entropy_loss, etc.) still use the default sum_of_sample_mean. (e.g., examples/Dr.GRPO/custom_reducer.py:get_pg_loss_reducer).",
+                help="Path to a custom reducer function for pg_loss only. When set, pg_loss will use this custom reducer while other metrics (pg_clipfrac, ppo_kl, entropy_loss, etc.) still use the default sum_of_sample_mean.",
             )
 
             parser.add_argument(