diff --git a/authenticate_message.go b/authenticate_message.go
index adb35e2..5ec0a1a 100644
--- a/authenticate_message.go
+++ b/authenticate_message.go
@@ -134,7 +134,7 @@ func ProcessChallenge(challengeMessageData []byte, user, password string) ([]byt
 			cm.ServerChallenge[:], clientChallenge)
 	}
 
-	PrintDebug("Challenge response:\nNT '%s';\nLM '%s'\n", base64.StdEncoding.EncodeToString(am.NtChallengeResponse), base64.StdEncoding.EncodeToString(am.LmChallengeResponse))
+	PrintDebug("Challenge response:\nNT '%s';\nLM '%s'", base64.StdEncoding.EncodeToString(am.NtChallengeResponse), base64.StdEncoding.EncodeToString(am.LmChallengeResponse))
 
 	return am.MarshalBinary()
 }