diff --git a/timm/models/davit.py b/timm/models/davit.py
index 80974b05..d43eb579 100644
--- a/timm/models/davit.py
+++ b/timm/models/davit.py
@@ -216,8 +216,8 @@ def window_reverse(windows : Tensor, window_size: int, H: int, W: int):
         x: (B, H, W, C)
     """
     
-    B = torch.floor(torch.tensor(windows.size(dim=0)) / (H * W / window_size / window_size)).item()
-    x = windows.view(B, H // window_size, W // window_size, window_size, window_size, -1)
+    B = dict(int(torch.floor(torch.tensor(windows.size(dim=0)) / (H * W / window_size / window_size)).item()))
+    x = windows.view(B[0], H // window_size, W // window_size, window_size, window_size, -1)
     x = x.permute(0, 1, 3, 2, 4, 5).contiguous().view(B, H, W, -1)
     return x