diff --git a/comfy/ldm/flux/controlnet.py b/comfy/ldm/flux/controlnet.py
index dbd2a47c05b6..7dcf82bbf3e8 100644
--- a/comfy/ldm/flux/controlnet.py
+++ b/comfy/ldm/flux/controlnet.py
@@ -123,6 +123,8 @@ def forward_orig(
 
         if y is None:
             y = torch.zeros((img.shape[0], self.params.vec_in_dim), device=img.device, dtype=img.dtype)
+        else:
+            y = y[:, :self.params.vec_in_dim]
 
         # running on sequences img
         img = self.img_in(img)