diff --git a/3d-viewer/3d_rendering/legacy/3d_model.cpp b/3d-viewer/3d_rendering/legacy/3d_model.cpp
index 4c2fa956b1..30e00c8fa9 100644
--- a/3d-viewer/3d_rendering/legacy/3d_model.cpp
+++ b/3d-viewer/3d_rendering/legacy/3d_model.cpp
@@ -492,7 +492,7 @@ void MODEL_3D::DrawBbox() const
                     reinterpret_cast<const void*>( offsetof( VERTEX, m_color ) ) );
 
     glDrawElements( GL_LINES, bbox_idx_count, m_bbox_index_buffer_type,
-                    reinterpret_cast<const void*>( NULL ) );
+                    reinterpret_cast<const void*>( 0 ) );
 }