diff --git a/sources/reactphysics3d/body/BoundingVolume.h b/sources/reactphysics3d/body/BoundingVolume.h
index 25589bed..f504475d 100644
--- a/sources/reactphysics3d/body/BoundingVolume.h
+++ b/sources/reactphysics3d/body/BoundingVolume.h
@@ -47,7 +47,7 @@ class BoundingVolume {
         void setBodyPointer(Body* body);  // Set the body pointer
 
         virtual void updateOrientation(const Vector3D& newCenter, const Quaternion& rotationQuaternion)=0;      // Update the orientation of the bounding volume according to the new orientation of the body
-        virtual std::vector<Vector3D> getExtremeVertices(const Vector3D& axis) const;                           // Return all the vertices that are projected at the extreme of the projection of the bouding volume on the axis
+        virtual std::vector<Vector3D> getExtremeVertices(const Vector3D& axis) const=0;                           // Return all the vertices that are projected at the extreme of the projection of the bouding volume on the axis
         virtual void draw() const=0;                                                                                    // Display the bounding volume (only for testing purpose)
 };