diff --git a/opencompass/tasks/openicl_eval.py b/opencompass/tasks/openicl_eval.py
index d04fb1991..3fa3f67e5 100644
--- a/opencompass/tasks/openicl_eval.py
+++ b/opencompass/tasks/openicl_eval.py
@@ -207,7 +207,7 @@ def _extract_role_pred(self, s: str, begin_str: Optional[str],
         if end_str:
             # TODO: Support calling tokenizer for the accurate eos token
             # and avoid such hardcode
-            end_idx = s.find(end_str[:1], start)
+            end_idx = s.find(end_str, start)
             if end_idx != -1:
                 end = end_idx