diff --git a/libs/langgraph/langgraph/pregel/runner.py b/libs/langgraph/langgraph/pregel/runner.py
index af80ed715..1651b0f4f 100644
--- a/libs/langgraph/langgraph/pregel/runner.py
+++ b/libs/langgraph/langgraph/pregel/runner.py
@@ -407,8 +407,7 @@ class PregelRunner:
             # return a chained future to ensure commit() callback is called
             # before the returned future is resolved, to ensure stream order etc
             try:
-                asyncio.current_task()
-                in_async = True
+                in_async = asyncio.current_task() is not None
             except RuntimeError:
                 in_async = False
             # if in async context return an async future