diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 96e0b469..f43492b7 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -433,9 +433,7 @@ list(APPEND HEADERS
 list(APPEND SOURCES
     controls/LevelingSensor/QskSGNodeUtility.cpp
     controls/LevelingSensor/QskLevelingSensor.cpp
-    controls/LevelingSensor/QskLevelingSensorNodes.cpp
     controls/LevelingSensor/QskLevelingSensorSkinlet.cpp
-    controls/LevelingSensor/QskLevelingSensorUtility.cpp
 )
 
 if(ENABLE_PINYIN)
diff --git a/src/controls/LevelingSensor/QskLevelingSensorNodes.h b/src/controls/LevelingSensor/QskLevelingSensorNodes.h
index 6bf2a8c4..4ded2f7f 100644
--- a/src/controls/LevelingSensor/QskLevelingSensorNodes.h
+++ b/src/controls/LevelingSensor/QskLevelingSensorNodes.h
@@ -243,15 +243,18 @@ public:
 
     void update(const QskSkinnable* const skinnable, const QskAspect::Subcontrol subControl, const QVector<QPair<double, QString>>& labels, const QVector2D& scale = { 1.0, 0.0 }, const QVector2D& offset = {})
     {
-        if (childCount() != labels.count())
+        const auto count = labels.count();
+
+        for ( int i = childCount(); i > count; --i ) 
         {
-            removeAllChildNodes();
-            for (const auto& label : qAsConst(labels))
-            {
-                appendChildNode(new QskTextNode);
-            }
+            removeChildNode(lastChild());
         }
 
+        for ( int i = childCount(); i < count; ++i ) 
+        {
+            appendChildNode(new QskTextNode);
+        }        
+
         const QFontMetricsF metrics(skinnable->effectiveFont(subControl));
         const auto h = skinnable->effectiveFontHeight(subControl);
         const auto a = skinnable->alignmentHint(subControl);