diff --git a/src/lmwsip/__init__.py b/src/lmwsip/__init__.py
index 251e068..59c702e 100644
--- a/src/lmwsip/__init__.py
+++ b/src/lmwsip/__init__.py
@@ -668,9 +668,9 @@ recieve a answer from the sip server
                 if (len(bytebuf) == 0):
                     c+=1
                     self.log.debug("recv: bytebuf: %s" % bytebuf)
-                    if self.cleartelnet:
-                        if bytebuf[0] == 255:
-                            bytebuf = b''
+                if self.cleartelnet:
+                    if bytebuf[0] == 255:
+                        bytebuf = b''
             except Exception as e:
                 self.log.error("SipLmw.recv: socket timeout: %s", e)
                 self.closesocket()