diff --git a/gpt2.py b/gpt2.py
index b72bd2c..462376c 100644
--- a/gpt2.py
+++ b/gpt2.py
@@ -68,7 +68,7 @@ class GPT2ClassificationHeadCustom(nn.Module):
     def forward(self, x, **kwargs):
         if 'hidden_states' in kwargs and kwargs['hidden_states'] is not None:
             # Get last 5 hidden states from the end
-            hidden = torch.cat(kwargs['hidden_states'][-5:], dim=2)
+            hidden = torch.cat(kwargs['hidden_states'][-5:])
         else:
             hidden = torch.zeros(x.size(), dtype=x.dtype, device=x.device)