diff --git a/MANIFEST b/MANIFEST
index 06f04a966..f1880e541 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -34,14 +34,14 @@ lib/Slic3r/GUI/Plater.pm
 lib/Slic3r/GUI/SkeinPanel.pm
 lib/Slic3r/GUI/Tab.pm
 lib/Slic3r/Layer.pm
-lib/Slic3r/Layer/Material.pm
+lib/Slic3r/Layer/Region.pm
 lib/Slic3r/Line.pm
 lib/Slic3r/Model.pm
 lib/Slic3r/Point.pm
 lib/Slic3r/Polygon.pm
 lib/Slic3r/Polyline.pm
 lib/Slic3r/Print.pm
-lib/Slic3r/Print/Material.pm
+lib/Slic3r/Print/Region.pm
 lib/Slic3r/Print/Object.pm
 lib/Slic3r/Surface.pm
 lib/Slic3r/SVG.pm