diff --git a/packages/core/pattern.mjs b/packages/core/pattern.mjs
index 6f405b48..a194c81d 100644
--- a/packages/core/pattern.mjs
+++ b/packages/core/pattern.mjs
@@ -499,7 +499,7 @@ export class Pattern {
     const slices = Array.from({ length: n }, (x, i) => i);
     const slice_objects = slices.map((i) => ({ begin: i / n, end: (i + 1) / n }));
     const slicePat = slowcat(...slice_objects);
-    return this.union(slicePat)._fast(n);
+    return this.set(slicePat)._fast(n);
   }
 
   // cpm = cycles per minute
diff --git a/packages/core/test/pattern.test.mjs b/packages/core/test/pattern.test.mjs
index 641f81e4..06bd2b34 100644
--- a/packages/core/test/pattern.test.mjs
+++ b/packages/core/test/pattern.test.mjs
@@ -709,6 +709,14 @@ describe('Pattern', function () {
       assert.equal(sequence(1, 2, 3).ply(2).early(8).firstCycle().length, 6);
     });
   });
+  describe('striate', () => {
+    it('Can striate(2)', () => {
+      sameFirst(
+        sequence({ sound: 'a' }).striate(2),
+        sequence({ sound: 'a', begin: 0, end: 0.5 }, { sound: 'a', begin: 0.5, end: 1 }),
+      );
+    });
+  });
   describe('chop', () => {
     it('Can _chop(2)', () => {
       assert.deepStrictEqual(