diff --git a/kernels/BasicKernel.cpp b/kernels/BasicKernel.cpp
index 064fa97..515515a 100644
--- a/kernels/BasicKernel.cpp
+++ b/kernels/BasicKernel.cpp
@@ -4,19 +4,19 @@ BasicKernel::BasicKernel():
         myParameters(NULL), vectorNew(NULL), vectorOld(NULL) {
 }
 
-double * & BasicKernel::parameters() {
+inline double * & BasicKernel::parameters() {
     return myParameters;
 }
 
-double & BasicKernel::parameter(const unsigned int index) {
+inline double & BasicKernel::parameter(const unsigned int index) {
     return myParameters[index];
 }
 
-double * & BasicKernel::vector() {
+inline double * & BasicKernel::vector() {
     return vectorNew;
 }
 
-double * & BasicKernel::previousVector() {
+inline double * & BasicKernel::previousVector() {
     return vectorOld;
 }
 
diff --git a/kernels/BasicKernel.h b/kernels/BasicKernel.h
index ef05f35..e6f5965 100644
--- a/kernels/BasicKernel.h
+++ b/kernels/BasicKernel.h
@@ -24,12 +24,12 @@ public:
 
     // parameters are stored in a array of doubles
     // if you want to use other types, use the properties
-    virtual double&  parameter(const unsigned int index);
-    virtual double*& parameters();
+    double&  parameter(const unsigned int index);
+    double*& parameters();
 
     // getter functions for teh resulta
-    virtual double * & vector();
-    virtual double * & previousVector();
+    double * & vector();
+    double * & previousVector();
 
 };
 
diff --git a/kernels/Logistic.cpp b/kernels/Logistic.cpp
index 8eb2098..961229c 100644
--- a/kernels/Logistic.cpp
+++ b/kernels/Logistic.cpp
@@ -76,7 +76,7 @@ void Logistic::setProperty(const string identifier, const void * _value) {
     }
 }
 
-unsigned int Logistic::getNumberOfParameters() {
+inline unsigned int Logistic::getNumberOfParameters() {
     return dimension;
 }
 
diff --git a/kernels/Logistic.hpp b/kernels/Logistic.hpp
index c42a62c..215c195 100644
--- a/kernels/Logistic.hpp
+++ b/kernels/Logistic.hpp
@@ -18,11 +18,11 @@ public:
     Logistic(const unsigned int dimension);
 
 
-    virtual void iterate();
+    void iterate();
 
-    virtual void * getProperty(const string identifier);
-    virtual void setProperty(const string identifier, const void * value);
-    virtual unsigned int getNumberOfParameters();
+    void * getProperty(const string identifier);
+    void setProperty(const string identifier, const void * value);
+    unsigned int getNumberOfParameters();
 
 };
 
diff --git a/kernels/Lorenz3D.cpp b/kernels/Lorenz3D.cpp
index a1319eb..5d135a1 100644
--- a/kernels/Lorenz3D.cpp
+++ b/kernels/Lorenz3D.cpp
@@ -57,7 +57,7 @@ void Lorenz3D::setProperty(const string identifier, const void * value) {
     return;
 }
 
-unsigned int Lorenz3D::getNumberOfParameters() {
+inline unsigned int Lorenz3D::getNumberOfParameters() {
     return numberOfParameters;
 }
 
diff --git a/kernels/Lorenz3D.hpp b/kernels/Lorenz3D.hpp
index 570c8f3..4fc0b2d 100644
--- a/kernels/Lorenz3D.hpp
+++ b/kernels/Lorenz3D.hpp
@@ -20,11 +20,11 @@ public:
     Lorenz3D(const unsigned int dimensions);
 
 
-    virtual void iterate();
+    void iterate();
 
-    virtual void * getProperty(const string identifier);
-    virtual void setProperty(const string identifier, const void * value);
-    virtual unsigned int getNumberOfParameters();
+    void * getProperty(const string identifier);
+    void setProperty(const string identifier, const void * value);
+    unsigned int getNumberOfParameters();
 
 };
 
diff --git a/kernels/Polynomial.cpp b/kernels/Polynomial.cpp
index b10d34b..11df98e 100644
--- a/kernels/Polynomial.cpp
+++ b/kernels/Polynomial.cpp
@@ -124,6 +124,6 @@ void Polynomial::setProperty(const string identifier, const void * _value) {
     }
 }
 
-unsigned int Polynomial::getNumberOfParameters() {
+inline unsigned int Polynomial::getNumberOfParameters() {
     return numberOfParameters;
 }
diff --git a/kernels/Polynomial.hpp b/kernels/Polynomial.hpp
index e65b9a9..8074c96 100644
--- a/kernels/Polynomial.hpp
+++ b/kernels/Polynomial.hpp
@@ -23,11 +23,11 @@ public:
     Polynomial(const unsigned int dimensions, const unsigned int orde);
 
 
-    virtual void iterate();
+    void iterate();
 
-    virtual void * getProperty(const string identifier);
-    virtual void setProperty(const string identifier, const void * value);
-    virtual unsigned int getNumberOfParameters();
+    void * getProperty(const string identifier);
+    void setProperty(const string identifier, const void * value);
+    unsigned int getNumberOfParameters();
 
 };
 
diff --git a/kernels/PolynomialA3D.cpp b/kernels/PolynomialA3D.cpp
index fb5afbd..e4dd0f0 100644
--- a/kernels/PolynomialA3D.cpp
+++ b/kernels/PolynomialA3D.cpp
@@ -60,6 +60,6 @@ void PolynomialA3D::setProperty(const string identifier, const void * _value) {
 
 }
 
-unsigned int PolynomialA3D::getNumberOfParameters() {
+inline unsigned int PolynomialA3D::getNumberOfParameters() {
     return numberOfParameters;
 }
diff --git a/kernels/PolynomialA3D.hpp b/kernels/PolynomialA3D.hpp
index 7288f90..06ead4e 100644
--- a/kernels/PolynomialA3D.hpp
+++ b/kernels/PolynomialA3D.hpp
@@ -16,11 +16,11 @@ public:
     PolynomialA3D();
 
 
-    virtual void iterate();
+    void iterate();
 
-    virtual void * getProperty(const string identifier);
-    virtual void setProperty(const string identifier, const void * value);
-    virtual unsigned int getNumberOfParameters();
+    void * getProperty(const string identifier);
+    void setProperty(const string identifier, const void * value);
+    unsigned int getNumberOfParameters();
 
 };
 
diff --git a/kernels/Unravel3D.cpp b/kernels/Unravel3D.cpp
index d19b160..34dd827 100644
--- a/kernels/Unravel3D.cpp
+++ b/kernels/Unravel3D.cpp
@@ -57,6 +57,6 @@ void Unravel3D::setProperty(const string identifier, const void * value) {
     return;
 }
 
-unsigned int Unravel3D::getNumberOfParameters() {
+inline unsigned int Unravel3D::getNumberOfParameters() {
     return numberOfParameters;
 }
diff --git a/kernels/Unravel3D.hpp b/kernels/Unravel3D.hpp
index d37b6eb..916e11d 100644
--- a/kernels/Unravel3D.hpp
+++ b/kernels/Unravel3D.hpp
@@ -21,11 +21,11 @@ public:
     Unravel3D(const unsigned int dimensions);
 
 
-    virtual void iterate();
+    void iterate();
 
-    virtual void * getProperty(const string identifier);
-    virtual void setProperty(const string identifier, const void * value);
-    virtual unsigned int getNumberOfParameters();
+    void * getProperty(const string identifier);
+    void setProperty(const string identifier, const void * value);
+    unsigned int getNumberOfParameters();
 
 };