diff --git a/pipeline_cogvideox.py b/pipeline_cogvideox.py
index 877a9f7..b96e2fe 100644
--- a/pipeline_cogvideox.py
+++ b/pipeline_cogvideox.py
@@ -569,7 +569,7 @@ class CogVideoXPipeline(DiffusionPipeline):
                     
                     if do_classifier_free_guidance:
                         noise_pred_uncond, noise_pred_text = noise_pred.chunk(2)
-                        noise_pred = noise_pred_uncond + self.guidance_scale * (noise_pred_text - noise_pred_uncond)
+                        noise_pred = noise_pred_uncond + self._guidance_scale * (noise_pred_text - noise_pred_uncond)
 
                     # compute the previous noisy sample x_t -> x_t-1
                     latents, old_pred_original_sample = self.scheduler.step(