diff --git a/workflows/exp15-kelly-size/b_kelly_weight.yaml b/workflows/exp15-kelly-size/b_kelly_weight.yaml
index f67de51..b069119 100644
--- a/workflows/exp15-kelly-size/b_kelly_weight.yaml
+++ b/workflows/exp15-kelly-size/b_kelly_weight.yaml
@@ -121,6 +121,7 @@ task:
                       module_path: tac_qlib.contrib.strategy.kelly_weight
                       kwargs:
                           signal: "<PRED>"
+                          topk: 10
                           lookback: 20
                           min_obs: 10
                           kelly_fraction: 0.5