diff --git a/xs/MANIFEST b/xs/MANIFEST
index 184998f8e..f9ae27d70 100644
--- a/xs/MANIFEST
+++ b/xs/MANIFEST
@@ -1736,6 +1736,7 @@ t/14_geometry.t
 t/15_config.t
 t/16_flow.t
 t/17_boundingbox.t
+t/18_motionplanner.t
 xsp/BoundingBox.xsp
 xsp/Clipper.xsp
 xsp/Config.xsp
@@ -1749,6 +1750,7 @@ xsp/Flow.xsp
 xsp/Geometry.xsp
 xsp/Line.xsp
 xsp/Model.xsp
+xsp/MotionPlanner.xsp
 xsp/my.map
 xsp/mytype.map
 xsp/Point.xsp
diff --git a/xs/t/18_motionplanner.t b/xs/t/18_motionplanner.t
index 2a4af8991..c7bf78f88 100644
--- a/xs/t/18_motionplanner.t
+++ b/xs/t/18_motionplanner.t
@@ -4,7 +4,7 @@ use strict;
 use warnings;
 
 use Slic3r::XS;
-use Test::More tests => 17;
+use Test::More tests => 22;
 
 my $square = Slic3r::Polygon->new(  # ccw
     [100, 100],