diff --git a/tutorial/t3.geo b/tutorial/t3.geo
index 8303b49fdaf367f32e74a7b6eec7d126199234dc..7984307f0bfdcf4ffcc222790074cc5198ffef48 100644
--- a/tutorial/t3.geo
+++ b/tutorial/t3.geo
@@ -28,8 +28,8 @@ Extrude Surface { 6, {0,0,h} } {
 // extruded 3D mesh can be recombined into prisms (wedges) if the
 // surface elements are triangles, or hexahedra if the surface
 // elements are quadrangles. All rotations are specified by an axis
-// direction ({0,1,0}), an axis point ({0,0,0}) and a rotation angle
-// (Pi/2):
+// direction ({0,1,0}), an axis point ({-0.1,0,0.1}) and a rotation
+// angle (-Pi/2):
 
 Extrude Surface { 122, {0,1,0} , {-0.1,0,0.1} , -Pi/2 } { 
   Recombine ; Layers { 7, 9004, 1 } ;