diff --git a/src/diffusers/models/unets/unet_spatio_temporal_condition.py b/src/diffusers/models/unets/unet_spatio_temporal_condition.py
index 39a8009d5af9..5fe265e63fc5 100644
--- a/src/diffusers/models/unets/unet_spatio_temporal_condition.py
+++ b/src/diffusers/models/unets/unet_spatio_temporal_condition.py
@@ -90,7 +90,7 @@ def __init__(
         layers_per_block: Union[int, Tuple[int]] = 2,
         cross_attention_dim: Union[int, Tuple[int]] = 1024,
         transformer_layers_per_block: Union[int, Tuple[int], Tuple[Tuple]] = 1,
-        num_attention_heads: Union[int, Tuple[int]] = (5, 10, 10, 20),
+        num_attention_heads: Union[int, Tuple[int]] = (5, 10, 20, 20),
         num_frames: int = 25,
     ):
         super().__init__()