diff --git a/src/transformers/models/deprecated/deta/modeling_deta.py b/src/transformers/models/deprecated/deta/modeling_deta.py
index a5066958b6c6..c4f6f5c65ded 100644
--- a/src/transformers/models/deprecated/deta/modeling_deta.py
+++ b/src/transformers/models/deprecated/deta/modeling_deta.py
@@ -326,7 +326,7 @@ class DetaObjectDetectionOutput(ModelOutput):
     encoder_last_hidden_state: Optional[torch.FloatTensor] = None
     encoder_hidden_states: Optional[tuple[torch.FloatTensor]] = None
     encoder_attentions: Optional[tuple[torch.FloatTensor]] = None
-    enc_outputs_class = None
+    enc_outputs_class: Optional[torch.FloatTensor] = None
     enc_outputs_coord_logits: Optional[torch.FloatTensor] = None
     output_proposals: Optional[torch.FloatTensor] = None
 
@@ -1857,7 +1857,7 @@ def __init__(self, config: DetaConfig):
 
         prior_prob = 0.01
         bias_value = -math.log((1 - prior_prob) / prior_prob)
-        self.class_embed.bias.data = torch.ones(config.num_labels) * bias_value
+        self.class_embed.bias.data.fill_(bias_value)
         nn.init.constant_(self.bbox_embed.layers[-1].weight.data, 0)
         nn.init.constant_(self.bbox_embed.layers[-1].bias.data, 0)