From 50e7b9b7af08d5750a97c89a53dcb77cc2811134 Mon Sep 17 00:00:00 2001
From: bsongis <bsongis@gmail.com>
Date: Wed, 10 Sep 2014 12:07:14 +0200
Subject: [PATCH] Fixes #1566

---
 companion/src/firmwares/opentx/opentxeeprom.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/companion/src/firmwares/opentx/opentxeeprom.cpp b/companion/src/firmwares/opentx/opentxeeprom.cpp
index 44f3d7e17..afc231e63 100644
--- a/companion/src/firmwares/opentx/opentxeeprom.cpp
+++ b/companion/src/firmwares/opentx/opentxeeprom.cpp
@@ -1078,6 +1078,8 @@ class MixField: public TransformedField {
             mix.curve = CurveReference(CurveReference::CURVE_REF_DIFF, smallGvarToC9x(_curveParam));
           else if (_curveParam > 6)
             mix.curve = CurveReference(CurveReference::CURVE_REF_CUSTOM, _curveParam-6);
+          else if (_curveParam < 0)
+            mix.curve = CurveReference(CurveReference::CURVE_REF_CUSTOM, _curveParam);
           else
             mix.curve = CurveReference(CurveReference::CURVE_REF_FUNC, _curveParam);
         }