diff --git a/db_transfer.py b/db_transfer.py
index a9657b8..b85c66e 100644
--- a/db_transfer.py
+++ b/db_transfer.py
@@ -311,6 +311,8 @@ class DbTransfer(TransferBase):
 
 		rows = self.pull_db_users(conn)
 		conn.close()
+		if len(rows) == 0:
+			logging.warn('no user in db')
 		return rows
 
 	def pull_db_users(self, conn):
@@ -517,5 +519,7 @@ class MuJsonTransfer(TransferBase):
 				except Exception as e:
 					logging.error(e)
 
+		if len(rows) == 0:
+			logging.warn('no user in json file')
 		return rows
 
diff --git a/shadowsocks/tcprelay.py b/shadowsocks/tcprelay.py
index a6c981a..13e010a 100644
--- a/shadowsocks/tcprelay.py
+++ b/shadowsocks/tcprelay.py
@@ -114,7 +114,7 @@ class TCPRelayHandler(object):
                                                 config['method'])
         except Exception:
             self._stage = STAGE_DESTROYED
-            logging.error('creater encryptor fail at port %d', server._listen_port)
+            logging.error('create encryptor fail at port %d', server._listen_port)
             return
         self._encrypt_correct = True
         self._obfs = obfs.obfs(config['obfs'])