diff --git a/include/Geometry/vector_gen.h b/include/Geometry/vector_gen.h
index f86dfd195e61a168cd8121d52c93111b6e8b7fb5..632b33ff906da60f82eec84d9821d2df0025f159 100644
--- a/include/Geometry/vector_gen.h
+++ b/include/Geometry/vector_gen.h
@@ -132,6 +132,9 @@ public:
 	// Equal
 	bool operator==(const Vector<DIM,T>& v) const ;
 
+	// Different
+	bool operator!=(const Vector<DIM,T>& v) const ;
+
 	bool hasNan() const ;
 
 	/**********************************************/
diff --git a/include/Geometry/vector_gen.hpp b/include/Geometry/vector_gen.hpp
index a7f1275158673c46246141e6037d634ec66533a2..8d714c3db117793d3fc787f6aca675714bd73d1b 100644
--- a/include/Geometry/vector_gen.hpp
+++ b/include/Geometry/vector_gen.hpp
@@ -277,6 +277,15 @@ inline bool Vector<DIM,T>::operator==(const Vector<DIM,T>& v) const
 	return true ;
 }
 
+template <unsigned int DIM, typename T>
+inline bool Vector<DIM,T>::operator!=(const Vector<DIM,T>& v) const
+{
+	for(unsigned int i = 0 ; i < DIM ; ++i)
+		if(v[i] != m_data[i])
+			return true ;
+	return false ;
+}
+
 template <unsigned int DIM, typename T>
 inline bool Vector<DIM,T>::hasNan() const
 {
@@ -314,7 +323,6 @@ inline Vector<DIM,T> operator*(T a, const Vector<DIM,T>& v)
 	return v * a ;
 }
 
-
 template <unsigned int DIM, typename T>
 inline Vector<DIM,T> operator/(T a, const Vector<DIM,T>& v)
 {
@@ -346,7 +354,6 @@ inline Vector<DIM,T> slerp(const Vector<DIM,T> &v1, const Vector<DIM,T> &v2, con
 	return res ;
 }
 
-
 } // namespace Geom
 
 } // namespace CGoGN