diff --git a/src/gui/UBBackgroundPalette.cpp b/src/gui/UBBackgroundPalette.cpp
index d7218154..b975b33d 100644
--- a/src/gui/UBBackgroundPalette.cpp
+++ b/src/gui/UBBackgroundPalette.cpp
@@ -189,9 +189,15 @@ void UBBackgroundPalette::backgroundChanged()
     bool dark = UBApplication::boardController->activeScene()->isDarkBackground();
 
     if (dark)
+    {
         mSliderLabel->setStyleSheet("QLabel { color : white; }");
+        mIntermediateLinesLabel->setStyleSheet("QLabel { color : white; }");
+    }
     else
+    {
         mSliderLabel->setStyleSheet("QLabel { color : black; }");
+        mIntermediateLinesLabel->setStyleSheet("QLabel { color : black; }");
+    }
 }
 
 void UBBackgroundPalette::refresh()
diff --git a/src/tools/UBGraphicsAxes.cpp b/src/tools/UBGraphicsAxes.cpp
index 566e4b15..9fb6be2f 100644
--- a/src/tools/UBGraphicsAxes.cpp
+++ b/src/tools/UBGraphicsAxes.cpp
@@ -210,20 +210,20 @@ void UBGraphicsAxes::paintGraduations(QPainter *painter)
     QFontMetricsF fontMetrics(painter->font());
 
     // Update the width of one "centimeter" to correspond to the width of the background grid (whether it is displayed or not)
-    sPixelsPerCentimeter = UBApplication::boardController->activeScene()->backgroundGridSize();
+    mPixelsPerCentimeter = UBApplication::boardController->activeScene()->backgroundGridSize();
 
     // When a "centimeter" is too narrow, we only display every 5th number
     double numbersWidth = fontMetrics.boundingRect("-00").width();
-    bool shouldDisplayAllNumbers = (numbersWidth <= (sPixelsPerCentimeter - 5));
+    bool shouldDisplayAllNumbers = (numbersWidth <= (mPixelsPerCentimeter - 5));
 
     // draw numbers on x axis
-    int fromX = (xAxis().x1() + sMargin) / sPixelsPerCentimeter;
-    int toX = (xAxis().x2() - sMargin) / sPixelsPerCentimeter;
+    int fromX = (xAxis().x1() + sMargin) / mPixelsPerCentimeter;
+    int toX = (xAxis().x2() - sMargin) / mPixelsPerCentimeter;
 
     for (int centimeters(fromX); centimeters <= toX; centimeters++)
     {
         bool isImportant = abs(centimeters) == 1 || abs(centimeters) % 5 == 0;
-        double graduationX = sPixelsPerCentimeter * centimeters;
+        double graduationX = mPixelsPerCentimeter * centimeters;
         double graduationHeight = UBGeometryUtils::millimeterGraduationHeight;
 
         painter->drawLine(QLineF(graduationX, graduationHeight, graduationX, -graduationHeight));
@@ -244,13 +244,13 @@ void UBGraphicsAxes::paintGraduations(QPainter *painter)
     }
 
     // draw numbers on y axis
-    int fromY = (-yAxis().y1() + sMargin) / sPixelsPerCentimeter;
-    int toY = (-yAxis().y2() - sMargin) / sPixelsPerCentimeter;
+    int fromY = (-yAxis().y1() + sMargin) / mPixelsPerCentimeter;
+    int toY = (-yAxis().y2() - sMargin) / mPixelsPerCentimeter;
 
     for (int centimeters(fromY); centimeters <= toY; centimeters++)
     {
         bool isImportant = abs(centimeters) == 1 || abs(centimeters) % 5 == 0;
-        double graduationY = - sPixelsPerCentimeter * centimeters;
+        double graduationY = - mPixelsPerCentimeter * centimeters;
         double graduationHeight = UBGeometryUtils::millimeterGraduationHeight;
 
         painter->drawLine(QLineF(graduationHeight, graduationY, - graduationHeight, graduationY));
diff --git a/src/tools/UBGraphicsAxes.h b/src/tools/UBGraphicsAxes.h
index c478800f..8edcd75c 100644
--- a/src/tools/UBGraphicsAxes.h
+++ b/src/tools/UBGraphicsAxes.h
@@ -114,14 +114,15 @@ class UBGraphicsAxes : public QObject, public QGraphicsPolygonItem, public UBIte
         bool mShowButtons;
         bool mShowNumbers;
 
-
         QCursor mResizeCursorH;
         QCursor mResizeCursorV;
 
-        int drawLineDirection;
+        qreal mAntiScaleRatio;
+        qreal mPixelsPerCentimeter;
+        QRectF mBounds;
 
         // Constants
-        static const QRect               sDefaultRect;
+        static const QRect     sDefaultRect;
 
         static const int    sMinLength = 50;    // 1sm
         static const int    sMaxLength = 35000; // 700sm
@@ -132,11 +133,6 @@ class UBGraphicsAxes : public QObject, public QGraphicsPolygonItem, public UBIte
         static const int                  sDrawTransparency = 255;
         static const QColor       sLightBackgroundDrawColor;
         static const QColor        sDarkBackgroundDrawColor;
-
-        qreal mStrokeWidth;
-        qreal mAntiScaleRatio;
-        qreal sPixelsPerCentimeter;
-        QRectF mBounds;
 };
 
 #endif // UBGRAPHICSAXES_H