diff --git a/doc/salome/gui/SMESH/images/extrusion1.png b/doc/salome/gui/SMESH/images/extrusion1.png
index b48278242..4ba34af14 100644
Binary files a/doc/salome/gui/SMESH/images/extrusion1.png and b/doc/salome/gui/SMESH/images/extrusion1.png differ
diff --git a/doc/salome/gui/SMESH/images/extrusion2.png b/doc/salome/gui/SMESH/images/extrusion2.png
index d1d6d0823..841b758ad 100755
Binary files a/doc/salome/gui/SMESH/images/extrusion2.png and b/doc/salome/gui/SMESH/images/extrusion2.png differ
diff --git a/doc/salome/gui/SMESH/input/extrusion_along_path.doc b/doc/salome/gui/SMESH/input/extrusion_along_path.doc
index ce96f99d9..f11746aa0 100644
--- a/doc/salome/gui/SMESH/input/extrusion_along_path.doc
+++ b/doc/salome/gui/SMESH/input/extrusion_along_path.doc
@@ -135,6 +135,9 @@ button and remove them from the list by pressing the <em>"Remove"</em> button.
 \image html image106.gif
 <center><em>"Remove" button</em></center>
 
+<b>Linear variation of the angles</b> option allows defining the angle of gradual rotation for the whole path. 
+At each step the shape will be rotated by angle/nb. of steps. 
+
 </li>
 </ul>
 </li>