diff --git a/ppfleetx/core/engine/eager_engine.py b/ppfleetx/core/engine/eager_engine.py
index 514cab30e..d91a4e5ac 100644
--- a/ppfleetx/core/engine/eager_engine.py
+++ b/ppfleetx/core/engine/eager_engine.py
@@ -158,7 +158,7 @@ def configure_optimizers(self):
             if self._sharding_stage == 3 or self._sharding_offload:
                 self._reduce_overlap = False
                 logger.warning("reduce overlap only valid for sharding stage 2 without offload")
-        self._broadcast_overlap = self._dist_configs['sharding']['_broadcast_overlap']
+        self._broadcast_overlap = self._dist_configs['sharding']['broadcast_overlap']
         if self._sharding_degree > 1 and self._broadcast_overlap:
             if self._sharding_stage == 3 or self._sharding_offload:
                 self._broadcast_overlap = False