diff --git a/lang_agent/graphs/react.py b/lang_agent/graphs/react.py
index fe2a9be..439073e 100644
--- a/lang_agent/graphs/react.py
+++ b/lang_agent/graphs/react.py
@@ -70,6 +70,7 @@ class ReactGraph(GraphBase):
         for msg in msgs:
             if isinstance(msg, HumanMessage):
                 candidate_hum_msg = msg
+                break
                 
         assert isinstance(candidate_hum_msg, HumanMessage), "not a human message"