diff --git a/src/libs/vtools/visualization/line/visline.cpp b/src/libs/vtools/visualization/line/visline.cpp
index 01f7a385d..02a5fb5f8 100644
--- a/src/libs/vtools/visualization/line/visline.cpp
+++ b/src/libs/vtools/visualization/line/visline.cpp
@@ -43,7 +43,7 @@
 VisLine::VisLine(const VContainer *data, QGraphicsItem *parent)
     :Visualization(data), VScaledLine(parent)
 {
-    this->setZValue(1);// Show on top real tool
+    this->setZValue(1);// Show on top of a real tool
     InitPen();
 }
 
diff --git a/src/libs/vtools/visualization/line/vistoolheight.cpp b/src/libs/vtools/visualization/line/vistoolheight.cpp
index 72a6cf0b8..94afe33ba 100644
--- a/src/libs/vtools/visualization/line/vistoolheight.cpp
+++ b/src/libs/vtools/visualization/line/vistoolheight.cpp
@@ -45,8 +45,7 @@
 
 //---------------------------------------------------------------------------------------------------------------------
 VisToolHeight::VisToolHeight(const VContainer *data, QGraphicsItem *parent)
-    : VisLine(data, parent), lineP1Id(NULL_ID), lineP2Id(NULL_ID), point(nullptr), base_point(nullptr), lineP1(nullptr),
-      lineP2(nullptr), line(nullptr), line_intersection(nullptr)
+    : VisLine(data, parent)
 {
     base_point = InitPoint(supportColor, this);
     lineP1 = InitPoint(supportColor, this);
diff --git a/src/libs/vtools/visualization/line/vistoolheight.h b/src/libs/vtools/visualization/line/vistoolheight.h
index 60c675fb4..9c86b9b24 100644
--- a/src/libs/vtools/visualization/line/vistoolheight.h
+++ b/src/libs/vtools/visualization/line/vistoolheight.h
@@ -56,14 +56,14 @@ public:
 private:
     Q_DISABLE_COPY(VisToolHeight)
     //base point in parent class
-    quint32              lineP1Id;//first point of line
-    quint32              lineP2Id;//second point of line
-    VScaledEllipse *point;
-    VScaledEllipse *base_point;
-    VScaledEllipse *lineP1;
-    VScaledEllipse *lineP2;
-    VScaledLine    *line;
-    VScaledLine    *line_intersection;
+    quint32              lineP1Id{NULL_ID};//first point of line
+    quint32              lineP2Id{NULL_ID};//second point of line
+    VScaledEllipse *point{nullptr};
+    VScaledEllipse *base_point{nullptr};
+    VScaledEllipse *lineP1{nullptr};
+    VScaledEllipse *lineP2{nullptr};
+    VScaledLine    *line{nullptr};
+    VScaledLine    *line_intersection{nullptr};
     void         ShowIntersection(const QLineF &height_line, const QLineF &base_line);
 };