diff --git a/src/util.js b/src/util.js
index 8ac0ecb1..a810851f 100644
--- a/src/util.js
+++ b/src/util.js
@@ -109,7 +109,7 @@ const util = {
       throw new Error('Zero MPI');
     }
     const stripped = bin.subarray(bin.length - Math.ceil(bitSize / 8));
-    const prefix = Uint8Array.from([(bitSize & 0xFF00) >> 8, bitSize & 0xFF]);
+    const prefix = new Uint8Array([(bitSize & 0xFF00) >> 8, bitSize & 0xFF]);
     return util.concatUint8Array([prefix, stripped]);
   },
 
diff --git a/test/general/packet.js b/test/general/packet.js
index d0145c44..10bf6741 100644
--- a/test/general/packet.js
+++ b/test/general/packet.js
@@ -827,11 +827,11 @@ V+HOQJQxXJkVRYa3QrFUehiMzTeqqMdgC6ZqJy7+
     expect(rawNotations.length).to.equal(2);
 
     expect(rawNotations[0].name).to.equal('test@example.com');
-    expect(rawNotations[0].value).to.deep.equal(Uint8Array.from(['2'.charCodeAt(0)]));
+    expect(rawNotations[0].value).to.deep.equal(new Uint8Array(['2'.charCodeAt(0)]));
     expect(rawNotations[0].humanReadable).to.equal(true);
 
     expect(rawNotations[1].name).to.equal('test@example.com');
-    expect(rawNotations[1].value).to.deep.equal(Uint8Array.from(['3'.charCodeAt(0)]));
+    expect(rawNotations[1].value).to.deep.equal(new Uint8Array(['3'.charCodeAt(0)]));
     expect(rawNotations[1].humanReadable).to.equal(true);
   });
 
diff --git a/test/general/signature.js b/test/general/signature.js
index d2a6dbbb..b174b3fa 100644
--- a/test/general/signature.js
+++ b/test/general/signature.js
@@ -922,7 +922,7 @@ hUhMKMuiM3pRwdIyDOItkUWQmjEEw7/XmhgInkXsCw==
     expect(signature.rawNotations.length).to.equal(1);
     const notation = signature.rawNotations[0];
     expect(notation.name).to.equal('test@key.com');
-    expect(notation.value).to.deep.equal(Uint8Array.from([0x01, 0x02, 0x03]));
+    expect(notation.value).to.deep.equal(new Uint8Array([0x01, 0x02, 0x03]));
     expect(notation.humanReadable).to.equal(false);
   });