diff --git a/3d-viewer/3d_canvas/cinfo3d_visu.cpp b/3d-viewer/3d_canvas/cinfo3d_visu.cpp
index 37301ee653..154123fe94 100644
--- a/3d-viewer/3d_canvas/cinfo3d_visu.cpp
+++ b/3d-viewer/3d_canvas/cinfo3d_visu.cpp
@@ -463,9 +463,6 @@ void CINFO3D_VISU::createBoardPolygon()
         wxLogMessage( errmsg );
     }
 
-    // Be sure the polygon is strictly simple to avoid issues.
-    m_board_poly.Simplify( SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
-
     Polygon_Calc_BBox_3DU( m_board_poly, m_board2dBBox3DU, m_biuTo3Dunits );
 }