diff --git a/internlm/solver/optimizer/hybrid_zero_optim.py b/internlm/solver/optimizer/hybrid_zero_optim.py
index 0ef9909..4db758d 100644
--- a/internlm/solver/optimizer/hybrid_zero_optim.py
+++ b/internlm/solver/optimizer/hybrid_zero_optim.py
@@ -709,7 +709,7 @@ class HybridZeroOptimizer(BaseOptimizer):
         for handle in handles:
             handle.wait()
 
-        torch.cuda().synchronize()
+        torch.cuda.synchronize()
 
     ##################
     # FP16 Utilities #