From 8ec29b4df7e183b528a66c48ece580df9672f7e7 Mon Sep 17 00:00:00 2001
From: le-codeur-rapide <166131032+le-codeur-rapide@users.noreply.github.com>
Date: Wed, 21 May 2025 16:38:29 +0200
Subject: [PATCH] docs: fix example pregel reducer (#4740)

---
 docs/docs/concepts/pregel.md                | 2 +-
 libs/langgraph/langgraph/pregel/__init__.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docs/docs/concepts/pregel.md b/docs/docs/concepts/pregel.md
index 3c8b01cac..5157848db 100644
--- a/docs/docs/concepts/pregel.md
+++ b/docs/docs/concepts/pregel.md
@@ -180,7 +180,7 @@ Below are a few different examples to give you a sense of the Pregel API.
 
     def reducer(current, update):
         if current:
-            return current + " | " + "update"
+            return current + " | " + update
         else:
             return update
 
diff --git a/libs/langgraph/langgraph/pregel/__init__.py b/libs/langgraph/langgraph/pregel/__init__.py
index 0f2ce1233..bcd2f1ce3 100644
--- a/libs/langgraph/langgraph/pregel/__init__.py
+++ b/libs/langgraph/langgraph/pregel/__init__.py
@@ -411,7 +411,7 @@ class Pregel(PregelProtocol):
 
         def reducer(current, update):
             if current:
-                return current + " | " + "update"
+                return current + " | " + update
             else:
                 return update