diff --git a/rag/prompts/prompts.py b/rag/prompts/prompts.py
index 40750a1efcc..b07f3db7c5e 100644
--- a/rag/prompts/prompts.py
+++ b/rag/prompts/prompts.py
@@ -88,7 +88,7 @@ def count():
         return max_length, msg
 
     m = msg_[-1]["content"]
-    m = encoder.decode(encoder.encode(m)[: max_length - ll2])
+    m = encoder.decode(encoder.encode(m)[: max_length - ll])
     msg[-1]["content"] = m
     return max_length, msg