diff --git a/include/Nazara/Math/Vector2.inl b/include/Nazara/Math/Vector2.inl
index a9afe0de7..3f41b80d1 100644
--- a/include/Nazara/Math/Vector2.inl
+++ b/include/Nazara/Math/Vector2.inl
@@ -426,7 +426,10 @@ bool NzVector2<T>::operator<(const NzVector2& vec) const
 template<typename T>
 bool NzVector2<T>::operator<=(const NzVector2& vec) const
 {
-	return operator<(vec) || operator==(vec);
+	if (x == vec.x)
+		return y <= vec.y;
+	else
+		return x < vec.x;
 }
 
 template<typename T>
diff --git a/include/Nazara/Math/Vector3.inl b/include/Nazara/Math/Vector3.inl
index e070f8714..acaf98694 100644
--- a/include/Nazara/Math/Vector3.inl
+++ b/include/Nazara/Math/Vector3.inl
@@ -490,7 +490,15 @@ bool NzVector3<T>::operator<(const NzVector3& vec) const
 template<typename T>
 bool NzVector3<T>::operator<=(const NzVector3& vec) const
 {
-	return operator<(vec) || operator==(vec);
+	if (x == vec.x)
+	{
+		if (y < vec.y)
+			return z <= vec.z;
+		else
+			return y < vec.y;
+	}
+	else
+		return x < vec.x;
 }
 
 template<typename T>
diff --git a/include/Nazara/Math/Vector4.inl b/include/Nazara/Math/Vector4.inl
index e3c7706b1..fd116e51d 100644
--- a/include/Nazara/Math/Vector4.inl
+++ b/include/Nazara/Math/Vector4.inl
@@ -447,7 +447,20 @@ bool NzVector4<T>::operator<(const NzVector4& vec) const
 template<typename T>
 bool NzVector4<T>::operator<=(const NzVector4& vec) const
 {
-	return operator<(vec) || operator==(vec);
+	if (x == vec.x)
+	{
+		if (y == vec.y)
+		{
+			if (z == vec.z)
+				return w <= vec.w;
+			else
+				return z < vec.z;
+		}
+		else
+			return y < vec.y;
+	}
+	else
+		return x < vec.x;
 }
 
 template<typename T>