diff --git a/pymodbus/framer/socket_framer.py b/pymodbus/framer/socket_framer.py
index fff99d99a..e67189732 100644
--- a/pymodbus/framer/socket_framer.py
+++ b/pymodbus/framer/socket_framer.py
@@ -118,7 +118,7 @@ def decode_data(self, data):
         if len(data) > self._hsize:
             tid, pid, length, uid, fcode = struct.unpack(SOCKET_FRAME_HEADER,
                                                          data[0:self._hsize+1])
-            return dict(tid=tid, pid=pid, lenght=length, unit=uid, fcode=fcode)
+            return dict(tid=tid, pid=pid, length=length, unit=uid, fcode=fcode)
         return dict()
 
     def processIncomingPacket(self, data, callback, unit, **kwargs):