diff --git a/test/collection/test_hashset.scad b/test/collection/test_hashset.scad
index 0bc076b1..2f3ffe03 100644
--- a/test/collection/test_hashset.scad
+++ b/test/collection/test_hashset.scad
@@ -9,14 +9,15 @@ module test_hashset() {
     echo("==== test_hashset ====");
 
     s = hashset([1, 2, 3, 4, 5, 2, 3, 5]);
-    assert(hashset_list(s) == [1, 2, 3, 4, 5]);
+
+    assert(hashset_list(s) == [3, 1, 4, 2, 5]);
 
     s2 = hashset_add(s, 9);
-    assert(hashset_list(s2) == [1, 9, 2, 3, 4, 5]);
+    assert(hashset_list(s2) == [3, 9, 1, 4, 2, 5]);
 
     assert(!hashset_has(s2, 13));
-
-    assert(hashset_list(hashset_del(s2, 2)) == [1, 9, 3, 4, 5]);
+    
+    assert(hashset_list(hashset_del(s2, 2)) == [3, 9, 1, 4, 5]);
 }
 
 test_hashset();
\ No newline at end of file
diff --git a/test/test_all.scad b/test/test_all.scad
index b09822f2..3817c51d 100644
--- a/test/test_all.scad
+++ b/test/test_all.scad
@@ -80,3 +80,6 @@ include <voxel/test_vx_circle.scad>;
 include <voxel/test_vx_cylinder.scad>;
 include <voxel/test_vx_sphere.scad>;
 include <voxel/test_vx_polygon.scad>;
+
+// Collection
+include <collection/test_hashset.scad>;