diff --git a/radio/src/gui/colorlcd/curveedit.cpp b/radio/src/gui/colorlcd/curveedit.cpp
index f0e9fd271..49afd7562 100644
--- a/radio/src/gui/colorlcd/curveedit.cpp
+++ b/radio/src/gui/colorlcd/curveedit.cpp
@@ -75,6 +75,7 @@ void CurveDataEdit::update()
                         ? 100
                         : points[curvePointsCount + i - 1]),
           [=](int32_t newValue) {
+            if (i == 0 || i == curvePointsCount - 1) return;
             points[curvePointsCount + i - 1] = newValue;
             SET_DIRTY();
             curveEdit->updatePreview();
diff --git a/radio/src/thirdparty/libopenui b/radio/src/thirdparty/libopenui
index 83009f63f..9dd77353c 160000
--- a/radio/src/thirdparty/libopenui
+++ b/radio/src/thirdparty/libopenui
@@ -1 +1 @@
-Subproject commit 83009f63f382913091c5bcae77fdccf509756584
+Subproject commit 9dd77353ce35ea412b92e92032e7718841d82cad