diff --git a/mmcv/ops/csrc/common/pytorch_npu_util.hpp b/mmcv/ops/csrc/common/pytorch_npu_util.hpp
index a2b848cee6b..43d2ceab0f0 100644
--- a/mmcv/ops/csrc/common/pytorch_npu_util.hpp
+++ b/mmcv/ops/csrc/common/pytorch_npu_util.hpp
@@ -305,7 +305,7 @@ inline aclScalar *ConvertType(const at::Scalar &at_scalar) {
     }
     default:
       acl_scalar = nullptr;
-    break;
+      break;
   }
   return acl_scalar;
 }