diff --git a/colossalai/zero/sharded_optim/sharded_optim_v2.py b/colossalai/zero/sharded_optim/sharded_optim_v2.py
index 5b4cb1122..ac8b60033 100644
--- a/colossalai/zero/sharded_optim/sharded_optim_v2.py
+++ b/colossalai/zero/sharded_optim/sharded_optim_v2.py
@@ -25,7 +25,7 @@ class OptimState(Enum):
 class ShardedOptimizerV2(ColossalaiOptimizer):
 
     def __init__(self,
-                 adam_optim: Optimizer,
+                 optimizer: Optimizer,
                  sharded_model: Union[nn.Module, ShardedModelV2],
                  cpu_offload: bool = False,
                  initial_scale: float = 2**32,
@@ -37,7 +37,7 @@ class ShardedOptimizerV2(ColossalaiOptimizer):
                  max_scale: int = 2**32,
                  dp_process_group: Optional[ProcessGroup] = None,
                  mp_process_group: Optional[ProcessGroup] = None) -> None:
-        super().__init__(adam_optim)
+        super().__init__(optimizer)
         self.model: Union[nn.Module, ShardedModelV2] = sharded_model
         self.model_is_sharded = isinstance(sharded_model, ShardedModelV2)
         self.device = torch.cuda.current_device() if not cpu_offload else torch.device('cpu')
@@ -57,7 +57,7 @@ class ShardedOptimizerV2(ColossalaiOptimizer):
         # Store fp32 params
         self.master_params: Dict[Parameter, Tensor] = {}
 
-        for group in adam_optim.param_groups:
+        for group in optimizer.param_groups:
             for p in group['params']:
                 if hasattr(p, 'ca_attr'):
                     assert p.ca_attr.is_sharded, 'ShardedAdam can be only used with sharded model'