diff --git a/httpcore/http11.py b/httpcore/http11.py
index 7c38c603..23cc27ce 100644
--- a/httpcore/http11.py
+++ b/httpcore/http11.py
@@ -161,4 +161,3 @@ class HTTP11Connection(Client):
 
         if self._writer is not None:
             self._writer.close()
-            await self._writer.wait_closed()