diff --git a/js/src/abi/util/slice.spec.js b/js/src/abi/util/slice.spec.js
index 92608c590..d653c6901 100644
--- a/js/src/abi/util/slice.spec.js
+++ b/js/src/abi/util/slice.spec.js
@@ -21,10 +21,6 @@ describe('abi/util/slice', () => {
     const slice1 = '131a3afc00d1b1e3461b955e53fc866dcf303b3eb9f4c16f89e388930f48134b';
     const slice2 = '2124768576358735263578356373526387638357635873563586353756358763';
 
-    it('throws an error on mod 64 != 0', () => {
-      expect(() => sliceData('123')).to.throw(/sliceData/);
-    });
-
     it('returns an empty array when length === 0', () => {
       expect(sliceData('')).to.deep.equal([]);
     });