diff --git a/test/built-ins/AsyncFromSyncIteratorPrototype/next/return-promise.js b/test/built-ins/AsyncFromSyncIteratorPrototype/next/return-promise.js
index d3bb1be2f4d54a20c93461dbf76ca6d6c199b848..f4daeb01bceb4cd8ec048d7ff507c18ad149387a 100644
--- a/test/built-ins/AsyncFromSyncIteratorPrototype/next/return-promise.js
+++ b/test/built-ins/AsyncFromSyncIteratorPrototype/next/return-promise.js
@@ -12,7 +12,6 @@ info: |
   ...
   18. Return promiseCapability.[[Promise]].
 
-flags: [async]
 features: [async-iteration]
 ---*/
 
diff --git a/test/built-ins/AsyncFromSyncIteratorPrototype/return/iterator-result-unwrap-promise.js b/test/built-ins/AsyncFromSyncIteratorPrototype/return/iterator-result-unwrap-promise.js
index 08ed58ec30870fe38e6112db815cb78a21b39e9c..311b93a8f62dbb9215891d3d27abf08031de42a6 100644
--- a/test/built-ins/AsyncFromSyncIteratorPrototype/return/iterator-result-unwrap-promise.js
+++ b/test/built-ins/AsyncFromSyncIteratorPrototype/return/iterator-result-unwrap-promise.js
@@ -60,4 +60,5 @@ iter.next().then(function (result) {
       }).then($DONE, $DONE);
     }
   ).catch($DONE);
-}).then($DONE, $DONE);
+
+}).catch($DONE);
diff --git a/test/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result-unwrap-promise.js b/test/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result-unwrap-promise.js
index 521f513111860f50fc7085b6309a8dbb05ff18a7..f345682393bec50996f779a94910a76a03685979 100644
--- a/test/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result-unwrap-promise.js
+++ b/test/built-ins/AsyncFromSyncIteratorPrototype/throw/iterator-result-unwrap-promise.js
@@ -62,4 +62,4 @@ iter.next().then(function (result) {
       }).then($DONE, $DONE);
     }
   ).catch($DONE);
-}).then($DONE, $DONE);
+}).catch($DONE);
diff --git a/test/built-ins/TypedArrays/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js b/test/built-ins/TypedArrays/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js
index 1c916b43cdf332e338bc0280d50df49767b5dd67..0a2c1d6572b9d70b8f738648fa053a99e48e20f1 100644
--- a/test/built-ins/TypedArrays/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js
+++ b/test/built-ins/TypedArrays/ctors/buffer-arg/bufferbyteoffset-throws-from-modulo-element-size.js
@@ -22,6 +22,12 @@ features: [TypedArray]
 var buffer = new ArrayBuffer(1);
 
 testWithTypedArrayConstructors(function(TA) {
+
+  // Exclude 8 bit buffers from this tests, as their elementSize = 1
+  if ( TA.name.indexOf("8") > -1 ) {
+    return;
+  }
+
   assert.throws(RangeError, function() {
     new TA(buffer);
   });
diff --git a/test/built-ins/TypedArrays/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js b/test/built-ins/TypedArrays/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js
index f495e6bcc00d874bb9c33302e37f837eb3d9ea93..1f68c09b3a4cc7000f7313c21d42866fb766fcf4 100644
--- a/test/built-ins/TypedArrays/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js
+++ b/test/built-ins/TypedArrays/ctors/buffer-arg/byteoffset-throws-from-modulo-element-size.js
@@ -21,6 +21,12 @@ features: [TypedArray]
 var buffer = new ArrayBuffer(8);
 
 testWithTypedArrayConstructors(function(TA) {
+
+  // Exclude 8 bit buffers from this tests, as their elementSize = 1
+  if ( TA.name.indexOf("8") > -1 ) {
+    return;
+  }
+
   assert.throws(RangeError, function() {
     new TA(buffer, 7);
   });