diff --git a/nodes_sampler.py b/nodes_sampler.py
index d6064ae..e1cbfc8 100644
--- a/nodes_sampler.py
+++ b/nodes_sampler.py
@@ -1034,9 +1034,10 @@ class WanVideoSampler:
                         is_uncond=True
                     )
                     log.info(f"Extracted {len(lynx_ref_buffer_uncond)} uncond ref buffers")
-
-                lynx_embeds["ip_x"] = lynx_embeds["ip_x"].to(device, dtype)
-                lynx_embeds["ip_x_uncond"] = lynx_embeds["ip_x_uncond"].to(device, dtype)
+                
+                if lynx_embeds.get("ip_x", None) is not None:
+                    lynx_embeds["ip_x"] = lynx_embeds["ip_x"].to(device, dtype)
+                    lynx_embeds["ip_x_uncond"] = lynx_embeds["ip_x_uncond"].to(device, dtype)
                 lynx_embeds["ref_feature_extractor"] = False
                 lynx_embeds["ref_latent"] = lynx_embeds["ref_text_embed"] = None
                 lynx_embeds["ref_buffer"] = lynx_ref_buffer