diff --git a/lib/httpclient.rb b/lib/httpclient.rb
index 4f4b4297..7568e5a1 100644
--- a/lib/httpclient.rb
+++ b/lib/httpclient.rb
@@ -1136,6 +1136,8 @@ def protect_keep_alive_disconnected
       Thread.current[:HTTPClient_AcquireNewConnection] = true
       begin
         yield
+      rescue KeepAliveDisconnected => e
+        raise e.cause || e
       ensure
         Thread.current[:HTTPClient_AcquireNewConnection] = false
       end