diff --git a/comfy/ldm/minimax/model.py b/comfy/ldm/minimax/model.py
index b6feb8860..464a865f4 100644
--- a/comfy/ldm/minimax/model.py
+++ b/comfy/ldm/minimax/model.py
@@ -485,6 +485,7 @@ class MiniMaxH3Model(nn.Module):
         seed = int(payload.get("seed", 0))
         # every condition intentionally restarts the same RNG stream
         for z in payload.get("cond_video_latents", []):
+            z = comfy.ldm.common_dit.pad_to_patch_size(z, self.patch_size)
             r = patchify_video(z.to(torch.float32), self.patch_size)
             if aug < 1.0:
                 gen = torch.Generator("cpu").manual_seed(seed)