diff --git a/src/app/container/calculator.cpp b/src/app/container/calculator.cpp
index e23b549b0..aa36c999c 100644
--- a/src/app/container/calculator.cpp
+++ b/src/app/container/calculator.cpp
@@ -153,11 +153,10 @@ void Calculator::InitVariables(const VContainer *data, const QMap<int, QString>
 
     const QHash<QString, QSharedPointer<VInternalVariable> > *vars = data->DataVariables();
 
-    bool found = false;
     QMap<int, QString>::const_iterator i = tokens.constBegin();
     while (i != tokens.constEnd())
     {
-        found = false;
+        bool found = false;
         if (vars->contains(i.value()))
         {
             QSharedPointer<VInternalVariable> var = vars->value(i.value());
diff --git a/src/app/container/vcontainer.cpp b/src/app/container/vcontainer.cpp
index aa68c101e..3d3536316 100644
--- a/src/app/container/vcontainer.cpp
+++ b/src/app/container/vcontainer.cpp
@@ -495,7 +495,7 @@ void VContainer::SetHeightName(const QString &name)
  * @brief size return size
  * @return size in mm
  */
-qreal VContainer::size() const
+qreal VContainer::size()
 {
     return _size;
 }
@@ -511,7 +511,7 @@ QString VContainer::SizeName() const
  * @brief height return height
  * @return height in pattern units
  */
-qreal VContainer::height() const
+qreal VContainer::height()
 {
     return _height;
 }
diff --git a/src/app/container/vcontainer.h b/src/app/container/vcontainer.h
index 3676a80ea..7c341899a 100644
--- a/src/app/container/vcontainer.h
+++ b/src/app/container/vcontainer.h
@@ -200,13 +200,13 @@ public:
     void               ClearDetails();
     static void        ClearUniqueNames();
 
-    void               SetSize(qreal size);
+    static void        SetSize(qreal size);
     void               SetSizeName(const QString &name);
-    void               SetHeight(qreal height);
+    static void        SetHeight(qreal height);
     void               SetHeightName(const QString &name);
-    qreal              size() const;
-    QString            SizeName()const;
-    qreal              height() const;
+    static qreal       size();
+    QString            SizeName() const;
+    static qreal       height();
     QString            HeightName()const;
 
     bool               VariableExist(const QString& name);
diff --git a/src/app/dialogs/tools/dialogbisector.cpp b/src/app/dialogs/tools/dialogbisector.cpp
index 8b8c5ec0f..7b7ed07ad 100644
--- a/src/app/dialogs/tools/dialogbisector.cpp
+++ b/src/app/dialogs/tools/dialogbisector.cpp
@@ -44,7 +44,7 @@
 DialogBisector::DialogBisector(const VContainer *data, const quint32 &toolId, QWidget *parent)
     :DialogTool(data, toolId, parent), ui(new Ui::DialogBisector), number(0), typeLine(QString()),
       formula(QString()), firstPointId(NULL_ID), secondPointId(NULL_ID), thirdPointId(NULL_ID), formulaBaseHeight(0),
-      line(nullptr), prepare(false)
+      line(nullptr)
 {
     ui->setupUi(this);
     InitVariables(ui);
diff --git a/src/app/dialogs/tools/dialogbisector.h b/src/app/dialogs/tools/dialogbisector.h
index 6a0816a45..4b3cabad0 100644
--- a/src/app/dialogs/tools/dialogbisector.h
+++ b/src/app/dialogs/tools/dialogbisector.h
@@ -110,7 +110,6 @@ private:
     /** @brief formulaBaseHeight base height defined by dialogui */
     int                formulaBaseHeight;
     VisToolBisector    *line;
-    bool               prepare;
 
 };
 
diff --git a/src/app/geometry/varc_p.h b/src/app/geometry/varc_p.h
index c98b4f7ee..dd56deb94 100644
--- a/src/app/geometry/varc_p.h
+++ b/src/app/geometry/varc_p.h
@@ -54,13 +54,9 @@ public:
     {}
 
     VArcData(VPointF center, qreal radius, qreal f1, qreal f2)
-        : f1(f1), formulaF1(QStringLiteral("")), f2(f2), formulaF2(QStringLiteral("")), radius(radius),
-          formulaRadius(QStringLiteral("")), center(center)
-    {
-        formulaF1 = QString("%1").arg(f1);
-        formulaF2 = QString("%1").arg(f2);
-        formulaRadius = QString("%1").arg(radius);
-    }
+        : f1(f1), formulaF1(QString("%1").arg(f1)), f2(f2), formulaF2(QString("%1").arg(f2)), radius(radius),
+          formulaRadius(QString("%1").arg(radius)), center(center)
+    {}
 
     VArcData(const VArcData &arc)
         : QSharedData(arc), f1(arc.f1), formulaF1(arc.formulaF1), f2(arc.f2), formulaF2(arc.formulaF2),
diff --git a/src/app/geometry/vspline.cpp b/src/app/geometry/vspline.cpp
index ec695751a..57d76ce62 100644
--- a/src/app/geometry/vspline.cpp
+++ b/src/app/geometry/vspline.cpp
@@ -303,7 +303,7 @@ QVector<QPointF> VSpline::GetPoints (const QPointF &p1, const QPointF &p2, const
  * @param p4 last spline point.
  * @return length.
  */
-qreal VSpline::LengthBezier ( const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 ) const
+qreal VSpline::LengthBezier ( const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 )
 {
     QPainterPath splinePath;
     QVector<QPointF> points = GetPoints (p1, p2, p3, p4);
diff --git a/src/app/geometry/vspline.h b/src/app/geometry/vspline.h
index cf57a0fe1..9b08e2e66 100644
--- a/src/app/geometry/vspline.h
+++ b/src/app/geometry/vspline.h
@@ -77,7 +77,7 @@ protected:
     static QVector<QPointF> GetPoints (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 );
 private:
     QSharedDataPointer<VSplineData> d;
-    qreal          LengthBezier (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 ) const;
+    static qreal   LengthBezier (const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4 );
     static void    PointBezier_r ( qreal x1, qreal y1, qreal x2, qreal y2, qreal x3, qreal y3, qreal x4, qreal y4,
                                   qint16 level, QVector<qreal> &px, QVector<qreal> &py);
     static qreal   CalcSqDistance ( qreal x1, qreal y1, qreal x2, qreal y2);
diff --git a/src/app/visualization/vistoolsplinepath.cpp b/src/app/visualization/vistoolsplinepath.cpp
index 18bbdbe89..f6388d8b8 100644
--- a/src/app/visualization/vistoolsplinepath.cpp
+++ b/src/app/visualization/vistoolsplinepath.cpp
@@ -113,7 +113,6 @@ void VisToolSplinePath::setMode(const Mode &value)
 //---------------------------------------------------------------------------------------------------------------------
 QGraphicsEllipseItem *VisToolSplinePath::getPoint(unsigned int i)
 {
-    SCASSERT(i >= 0)
     if (static_cast<unsigned int>(points.size() - 1) >= i && points.isEmpty() == false)
     {
         return points.at(static_cast<int>(i));
diff --git a/src/app/widgets/vformulapropertyeditor.cpp b/src/app/widgets/vformulapropertyeditor.cpp
index 2873b84a3..3bff0d170 100644
--- a/src/app/widgets/vformulapropertyeditor.cpp
+++ b/src/app/widgets/vformulapropertyeditor.cpp
@@ -105,7 +105,7 @@ void VFormulaPropertyEditor::onToolButtonClicked()
 //---------------------------------------------------------------------------------------------------------------------
 bool VFormulaPropertyEditor::eventFilter(QObject *obj, QEvent *ev)
 {
-    if (obj == ToolButton && (ev->type() == QEvent::KeyPress || ev->type() == QEvent::KeyPress))
+    if (obj == ToolButton && ev->type() == QEvent::KeyPress)
     {
         // Ignore the event, so that eventually the delegate gets the event.
         ev->ignore();
diff --git a/src/libs/qmuparser/qmuparsertoken.h b/src/libs/qmuparser/qmuparsertoken.h
index 933f4ebde..8db39d292 100644
--- a/src/libs/qmuparser/qmuparsertoken.h
+++ b/src/libs/qmuparser/qmuparsertoken.h
@@ -328,7 +328,7 @@ public:
 
     //------------------------------------------------------------------------------
     template < class FunctionPtr >
-    FunctionPtr union_cast( void* objectPtr ) const
+    static FunctionPtr union_cast( void* objectPtr )
     {
         union
         {
diff --git a/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp b/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp
index 9ed51fced..01d6e58c2 100644
--- a/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vcolorpropertyeditor.cpp
@@ -112,7 +112,7 @@ void VColorPropertyEditor::onToolButtonClicked()
 
 bool VColorPropertyEditor::eventFilter(QObject *obj, QEvent *ev)
 {
-    if (obj == ToolButton && (ev->type() == QEvent::KeyPress || ev->type() == QEvent::KeyPress))
+    if (obj == ToolButton && ev->type() == QEvent::KeyPress)
     {
         // Ignore the event, so that eventually the delegate gets the event.
         ev->ignore();
diff --git a/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp b/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp
index 573bc04d5..ad5826be2 100644
--- a/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vfilepropertyeditor.cpp
@@ -132,7 +132,7 @@ bool VFileEditWidget::eventFilter(QObject *obj, QEvent *ev)
         else
             return QWidget::eventFilter(obj, ev);
     }
-    else if (obj == ToolButton && (ev->type() == QEvent::KeyPress || ev->type() == QEvent::KeyPress))
+    else if (obj == ToolButton && ev->type() == QEvent::KeyPress)
     {
         // Ignore the event, so that eventually the delegate gets the event.
         ev->ignore();
diff --git a/src/libs/vpropertyexplorer/plugins/vshortcutproperty.cpp b/src/libs/vpropertyexplorer/plugins/vshortcutproperty.cpp
index 75049fe08..dd9a3974b 100644
--- a/src/libs/vpropertyexplorer/plugins/vshortcutproperty.cpp
+++ b/src/libs/vpropertyexplorer/plugins/vshortcutproperty.cpp
@@ -63,7 +63,6 @@ QWidget* VShortcutProperty::createEditor(QWidget * parent, const QStyleOptionVie
     }
 
     return tmpWidget;
-    return nullptr;
 }
 
 
diff --git a/src/libs/vpropertyexplorer/vpropertyformview_p.h b/src/libs/vpropertyexplorer/vpropertyformview_p.h
index 18904c601..92646ce7b 100644
--- a/src/libs/vpropertyexplorer/vpropertyformview_p.h
+++ b/src/libs/vpropertyexplorer/vpropertyformview_p.h
@@ -47,13 +47,16 @@ public:
     bool IgnoreDataChangedSignal;
 
     VPropertyFormViewPrivate()
-        : VPropertyFormWidgetPrivate(), Model(NULL), PropertySet(NULL), NeedsRebuild(false) {}
+        : VPropertyFormWidgetPrivate(), Model(NULL), PropertySet(NULL), NeedsRebuild(false),
+          IgnoreDataChangedSignal(false) {}
 
     VPropertyFormViewPrivate(VPropertyModel* prop_model)
-        : VPropertyFormWidgetPrivate(), Model(prop_model), PropertySet(NULL), NeedsRebuild(false) {}
+        : VPropertyFormWidgetPrivate(), Model(prop_model), PropertySet(NULL), NeedsRebuild(false),
+          IgnoreDataChangedSignal(false) {}
 
     VPropertyFormViewPrivate(VPropertySet* prop_set)
-        : VPropertyFormWidgetPrivate(), Model(NULL), PropertySet(prop_set), NeedsRebuild(false) {}
+        : VPropertyFormWidgetPrivate(), Model(NULL), PropertySet(prop_set), NeedsRebuild(false),
+          IgnoreDataChangedSignal(false) {}
 };
 
 }
diff --git a/src/libs/vpropertyexplorer/vpropertymodel.cpp b/src/libs/vpropertyexplorer/vpropertymodel.cpp
index a9e6709d6..378d88dfe 100644
--- a/src/libs/vpropertyexplorer/vpropertymodel.cpp
+++ b/src/libs/vpropertyexplorer/vpropertymodel.cpp
@@ -85,7 +85,7 @@ VProperty* VPropertyModel::createProperty(const QString& id, const QString& name
 {
     VProperty* tmpProp = new VProperty(name);
     tmpProp->setValue(data);
-    if (tmpProp && addProperty(tmpProp, id, parentid))
+    if (addProperty(tmpProp, id, parentid))
     {
         return tmpProp;
     }