diff --git a/tensordict/nn/storage.py b/tensordict/nn/storage.py
index e7d58cead..6bad8870b 100644
--- a/tensordict/nn/storage.py
+++ b/tensordict/nn/storage.py
@@ -97,7 +97,7 @@ def __init__(
 
     def clear(self):
         self.init_fm(self.embedding.weight)
-        self.flag = torch.zeros(size=(self.embedding.num_embeddings, 1)).to(torch.int64)
+        self.flag = torch.zeros((self.embedding.num_embeddings, 1), dtype=torch.int64)
 
     def to_index(self, item: torch.Tensor) -> torch.Tensor:
         return torch.remainder(item.to(torch.int64), self.num_embedding).to(torch.int64)