diff --git a/sjrpc/client/simple.py b/sjrpc/client/simple.py
index 54bf61aef2b80eb4325523dc4f7277b75afcfa37..d4586f19e89d00280f806e09f1f9822c103216d5 100644
--- a/sjrpc/client/simple.py
+++ b/sjrpc/client/simple.py
@@ -97,7 +97,7 @@ class SimpleRpcClient(ConnectionManager):
                 self.shutdown()
 
         if event & select.EPOLLHUP:
-            logging.error('Socket HUP fd/%s: %s' % (fd, err))
+            logging.error('Socket HUP fd/%s' % fd)
             self.shutdown()                                                      #TODO
 
     def all_connections(self):
diff --git a/sjrpc/server/simple.py b/sjrpc/server/simple.py
index 8ad0490bafa61665de764a1e59c4ae4cccdd0273..be5fd88c6950769d6595219cb9c79af7280b4968 100644
--- a/sjrpc/server/simple.py
+++ b/sjrpc/server/simple.py
@@ -100,7 +100,7 @@ class SimpleRpcServer(ConnectionManager):
                     self.shutdown_client(fd)
 
             if event & select.EPOLLHUP:
-                logging.error('Socket HUP fd/%s: %s' % (fd, err))
+                logging.error('Socket HUP fd/%s' % fd)
                 self.shutdown_client(fd)