diff --git a/python/paddle/fluid/dygraph/layers.py b/python/paddle/fluid/dygraph/layers.py
index b56c34b8a3def..e1855ee6db9af 100644
--- a/python/paddle/fluid/dygraph/layers.py
+++ b/python/paddle/fluid/dygraph/layers.py
@@ -1572,6 +1572,7 @@ def transform(t, device, dtype, blocking):
                 device = t.place
             if dtype is None:
                 dtype = t.dtype
+
             new_t = t._copy_to(device, blocking)
             if isinstance(t, framework.ParamBase):
                 if dtype is not None and dtype != t.dtype: