diff --git a/src/Base/Exception.h b/src/Base/Exception.h
index c93bf7218b..8da3ec52ab 100644
--- a/src/Base/Exception.h
+++ b/src/Base/Exception.h
@@ -219,8 +219,7 @@ public:
 
     /// setter methods for including debug information
     /// intended to use via macro for autofilling of debugging information
-    inline void
-    setDebugInformation(const std::string& file, const int line, const std::string& function);
+    inline void setDebugInformation(const std::string& file, int line, const std::string& function);
 
     inline void setTranslatable(bool translatable);
 
@@ -844,7 +843,7 @@ inline bool Exception::getTranslatable() const
 }
 
 inline void
-Exception::setDebugInformation(const std::string& file, const int line, const std::string& function)
+Exception::setDebugInformation(const std::string& file, int line, const std::string& function)
 {
     _file = file;
     _line = line;
diff --git a/src/Base/Rotation.cpp b/src/Base/Rotation.cpp
index b8f7516efc..e506a4248c 100644
--- a/src/Base/Rotation.cpp
+++ b/src/Base/Rotation.cpp
@@ -69,7 +69,7 @@ Rotation::Rotation(const double q[4])
  * q0 = x, q1 = y, q2 = z and q3 = w,
  * where the quaternion is specified by q=w+xi+yj+zk.
  */
-Rotation::Rotation(const double q0, const double q1, const double q2, const double q3)
+Rotation::Rotation(double q0, double q1, double q2, double q3)
     : Rotation()
 {
     this->setValue(q0, q1, q2, q3);
@@ -146,7 +146,7 @@ void Rotation::evaluateVector()
     }
 }
 
-void Rotation::setValue(const double q0, const double q1, const double q2, const double q3)
+void Rotation::setValue(double q0, double q1, double q2, double q3)
 {
     this->quat[0] = q0;
     this->quat[1] = q1;
@@ -258,7 +258,7 @@ void Rotation::setValue(const Matrix4D& m)
     this->evaluateVector();
 }
 
-void Rotation::setValue(const Vector3d& axis, const double fAngle)
+void Rotation::setValue(const Vector3d& axis, double fAngle)
 {
     // Taken from <http://de.wikipedia.org/wiki/Quaternionen>
     //
diff --git a/src/Base/Rotation.h b/src/Base/Rotation.h
index edcdfec0db..9f36b71e9c 100644
--- a/src/Base/Rotation.h
+++ b/src/Base/Rotation.h
@@ -41,10 +41,10 @@ public:
     /** Construction. */
     //@{
     Rotation();
-    Rotation(const Vector3d& axis, const double fAngle);
+    Rotation(const Vector3d& axis, double fAngle);
     Rotation(const Matrix4D& matrix);
     Rotation(const double q[4]);
-    Rotation(const double q0, const double q1, const double q2, const double q3);
+    Rotation(double q0, double q1, double q2, double q3);
     Rotation(const Vector3d& rotateFrom, const Vector3d& rotateTo);
     Rotation(const Rotation& rot);
     //@}
@@ -53,7 +53,7 @@ public:
     //@{
     const double* getValue() const;
     void getValue(double& q0, double& q1, double& q2, double& q3) const;
-    void setValue(const double q0, const double q1, const double q2, const double q3);
+    void setValue(double q0, double q1, double q2, double q3);
     /// If not a null quaternion then \a axis will be normalized
     void getValue(Vector3d& axis, double& rfAngle) const;
     /// Does the same as the method above unless normalizing the axis.
@@ -61,7 +61,7 @@ public:
     void getValue(Matrix4D& matrix) const;
     void setValue(const double q[4]);
     void setValue(const Matrix4D& matrix);
-    void setValue(const Vector3d& axis, const double fAngle);
+    void setValue(const Vector3d& axis, double fAngle);
     void setValue(const Vector3d& rotateFrom, const Vector3d& rotateTo);
     /// Euler angles in yaw,pitch,roll notation
     void setYawPitchRoll(double y, double p, double r);
@@ -150,7 +150,7 @@ public:
     Vector3d multVec(const Vector3d& src) const;
     void multVec(const Vector3f& src, Vector3f& dst) const;
     Vector3f multVec(const Vector3f& src) const;
-    void scaleAngle(const double scaleFactor);
+    void scaleAngle(double scaleFactor);
     //@}
 
     /** Specialty constructors */
diff --git a/src/Base/Type.cpp b/src/Base/Type.cpp
index d6bab97369..ed74e1af05 100644
--- a/src/Base/Type.cpp
+++ b/src/Base/Type.cpp
@@ -119,7 +119,7 @@ Type Type::badType()
 }
 
 
-const Type Type::createType(const Type parent, const char* name, instantiationMethod method)
+const Type Type::createType(const Type& parent, const char* name, instantiationMethod method)
 {
     Type newType;
     newType.index = static_cast<unsigned int>(Type::typedata.size());
@@ -185,7 +185,7 @@ const Type Type::getParent() const
     return typedata[index]->parent;
 }
 
-bool Type::isDerivedFrom(const Type type) const
+bool Type::isDerivedFrom(const Type& type) const
 {
 
     Type temp(*this);
@@ -199,7 +199,7 @@ bool Type::isDerivedFrom(const Type type) const
     return false;
 }
 
-int Type::getAllDerivedFrom(const Type type, std::vector<Type>& List)
+int Type::getAllDerivedFrom(const Type& type, std::vector<Type>& List)
 {
     int cnt = 0;
 
@@ -217,7 +217,7 @@ int Type::getNumTypes()
     return static_cast<int>(typedata.size());
 }
 
-Type Type::getTypeIfDerivedFrom(const char* name, const Type parent, bool bLoadModule)
+Type Type::getTypeIfDerivedFrom(const char* name, const Type& parent, bool bLoadModule)
 {
     if (bLoadModule) {
         importModule(name);
diff --git a/src/Base/Type.h b/src/Base/Type.h
index e2e93e3057..5bfce4f194 100644
--- a/src/Base/Type.h
+++ b/src/Base/Type.h
@@ -99,29 +99,30 @@ public:
     static Type fromKey(unsigned int key);
     const char* getName() const;
     const Type getParent() const;
-    bool isDerivedFrom(const Type type) const;
+    bool isDerivedFrom(const Type& type) const;
 
-    static int getAllDerivedFrom(const Type type, std::vector<Type>& List);
+    static int getAllDerivedFrom(const Type& type, std::vector<Type>& List);
     /// Returns the given named type if is derived from parent type, otherwise return bad type
-    static Type getTypeIfDerivedFrom(const char* name, const Type parent, bool bLoadModule = false);
+    static Type
+    getTypeIfDerivedFrom(const char* name, const Type& parent, bool bLoadModule = false);
 
     static int getNumTypes();
 
     static const Type
-    createType(const Type parent, const char* name, instantiationMethod method = nullptr);
+    createType(const Type& parent, const char* name, instantiationMethod method = nullptr);
 
     unsigned int getKey() const;
     bool isBad() const;
 
     Type& operator=(const Type& type) = default;
     Type& operator=(Type&& type) = default;
-    bool operator==(const Type type) const;
-    bool operator!=(const Type type) const;
+    bool operator==(const Type& type) const;
+    bool operator!=(const Type& type) const;
 
-    bool operator<(const Type type) const;
-    bool operator<=(const Type type) const;
-    bool operator>=(const Type type) const;
-    bool operator>(const Type type) const;
+    bool operator<(const Type& type) const;
+    bool operator<=(const Type& type) const;
+    bool operator>=(const Type& type) const;
+    bool operator>(const Type& type) const;
 
     static Type badType();
     static void init();
@@ -145,32 +146,32 @@ inline unsigned int Type::getKey() const
     return this->index;
 }
 
-inline bool Type::operator!=(const Type type) const
+inline bool Type::operator!=(const Type& type) const
 {
     return (this->getKey() != type.getKey());
 }
 
-inline bool Type::operator==(const Type type) const
+inline bool Type::operator==(const Type& type) const
 {
     return (this->getKey() == type.getKey());
 }
 
-inline bool Type::operator<(const Type type) const
+inline bool Type::operator<(const Type& type) const
 {
     return (this->getKey() < type.getKey());
 }
 
-inline bool Type::operator<=(const Type type) const
+inline bool Type::operator<=(const Type& type) const
 {
     return (this->getKey() <= type.getKey());
 }
 
-inline bool Type::operator>=(const Type type) const
+inline bool Type::operator>=(const Type& type) const
 {
     return (this->getKey() >= type.getKey());
 }
 
-inline bool Type::operator>(const Type type) const
+inline bool Type::operator>(const Type& type) const
 {
     return (this->getKey() > type.getKey());
 }