diff --git a/include/Nazara/Math/Sphere.hpp b/include/Nazara/Math/Sphere.hpp
index 85a9ae8c7..f3cc1251e 100644
--- a/include/Nazara/Math/Sphere.hpp
+++ b/include/Nazara/Math/Sphere.hpp
@@ -17,7 +17,7 @@ class NzSphere
 		NzSphere() = default;
 		NzSphere(T X, T Y, T Z, T Radius);
 		//NzSphere(const NzCircle<T>& circle);
-		NzSphere(const NzVector3<T>& pos, T Radius);
+		NzSphere(const NzVector3<T>& center, T Radius);
 		NzSphere(const T sphere[4]);
 		template<typename U> explicit NzSphere(const NzSphere<U>& sphere);
 		NzSphere(const NzSphere& sphere) = default;
@@ -47,7 +47,7 @@ class NzSphere
 		NzSphere& Set(T X, T Y, T Z, T Radius);
 		//NzSphere& Set(const NzCircle<T>& rect);
 		NzSphere& Set(const NzSphere& sphere);
-		NzSphere& Set(const NzVector3<T>& pos, T Radius);
+		NzSphere& Set(const NzVector3<T>& center, T Radius);
 		NzSphere& Set(const T sphere[4]);
 		template<typename U> NzSphere& Set(const NzSphere<U>& sphere);
 
diff --git a/include/Nazara/Math/Sphere.inl b/include/Nazara/Math/Sphere.inl
index 874768f43..662ca7a65 100644
--- a/include/Nazara/Math/Sphere.inl
+++ b/include/Nazara/Math/Sphere.inl
@@ -23,9 +23,9 @@ NzSphere<T>::NzSphere(const NzCircle<T>& circle)
 }
 */
 template<typename T>
-NzSphere<T>::NzSphere(const NzVector3<T>& pos, T Radius)
+NzSphere<T>::NzSphere(const NzVector3<T>& center, T Radius)
 {
-	Set(pos, Radius);
+	Set(center, Radius);
 }
 
 template<typename T>
@@ -48,7 +48,7 @@ bool NzSphere<T>::Contains(T X, T Y, T Z) const
 }
 /*
 template<typename T>
-bool NzSphere<T>::Contains(const NzCube<T>& point) const
+bool NzSphere<T>::Contains(const NzCube<T>& cube) const
 {
 }
 */
@@ -154,11 +154,11 @@ NzSphere<T>& NzSphere<T>::Set(T X, T Y, T Z, T Radius)
 }
 
 template<typename T>
-NzSphere<T>& NzSphere<T>::Set(const NzVector3<T>& pos, T Radius)
+NzSphere<T>& NzSphere<T>::Set(const NzVector3<T>& center, T Radius)
 {
-	x = pos.x;
-	y = pos.y;
-	z = pos.z;
+	x = center.x;
+	y = center.y;
+	z = center.z;
 	radius = Radius;
 
 	return *this;
@@ -210,7 +210,7 @@ template<typename T>
 T NzSphere<T>::SquaredDistance(T X, T Y, T Z) const
 {
 	NzVector3<T> distance(X-x, Y-y, Z-z);
-	return radius*radius - distance.SquaredLength();
+	return distance.SquaredLength() - radius*radius;
 }
 
 template<typename T>