diff --git a/backend/text_processing/anima_engine.py b/backend/text_processing/anima_engine.py
index d42677e1..d1826346 100644
--- a/backend/text_processing/anima_engine.py
+++ b/backend/text_processing/anima_engine.py
@@ -40,6 +40,10 @@ class AnimaTextProcessingEngine:
         def next_chunk():
             nonlocal chunk
 
+            if not chunk.qwen_tokens:
+                chunk.qwen_tokens.append(self.id_pad)
+                chunk.qwen_multipliers.append(1.0)
+
             chunk.t5_tokens.append(self.id_end)
             chunk.t5_multipliers.append(1.0)