diff --git a/vllm_omni/model_executor/models/voxcpm2/voxcpm2_talker.py b/vllm_omni/model_executor/models/voxcpm2/voxcpm2_talker.py
index 978b56668..a3767df1d 100644
--- a/vllm_omni/model_executor/models/voxcpm2/voxcpm2_talker.py
+++ b/vllm_omni/model_executor/models/voxcpm2/voxcpm2_talker.py
@@ -824,7 +824,7 @@ def _optimized_solve_euler_with_noise(
             t = t - dt
             if step < len(t_span) - 1:
                 dt = t - t_span[step + 1]
-    return x
+    return x.clone()
 
 
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