3 files changed, 13 insertions, 11 deletions
diff --git a/js/src/tests/test262/built-ins/Math/acos/length.js b/js/src/tests/test262/built-ins/Math/acos/length.js
index 0d1fca6e4a..3785de0c0d 100644
--- a/js/src/tests/test262/built-ins/Math/acos/length.js
+++ b/js/src/tests/test262/built-ins/Math/acos/length.js
@@ -22,10 +22,11 @@ info: |
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Math.acos.length, 1);
-
-verifyNotEnumerable(Math.acos, "length");
-verifyNotWritable(Math.acos, "length");
-verifyConfigurable(Math.acos, "length");
+verifyProperty(Math.acos, "length", {
+  value: 1,
+  writable: false,
+  enumerable: false,
+  configurable: true
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Math/acos/name.js b/js/src/tests/test262/built-ins/Math/acos/name.js
index d441d92d10..1e8059d1eb 100644
--- a/js/src/tests/test262/built-ins/Math/acos/name.js
+++ b/js/src/tests/test262/built-ins/Math/acos/name.js
@@ -19,10 +19,11 @@ info: |
 includes: [propertyHelper.js]
 ---*/
 
-assert.sameValue(Math.acos.name, "acos");
-
-verifyNotEnumerable(Math.acos, "name");
-verifyNotWritable(Math.acos, "name");
-verifyConfigurable(Math.acos, "name");
+verifyProperty(Math.acos, "name", {
+  value: "acos",
+  writable: false,
+  enumerable: false,
+  configurable: true
+});
 
 reportCompare(0, 0);
diff --git a/js/src/tests/test262/built-ins/Math/acos/not-a-constructor.js b/js/src/tests/test262/built-ins/Math/acos/not-a-constructor.js
index 659f497ee4..8d9ef0724b 100644
--- a/js/src/tests/test262/built-ins/Math/acos/not-a-constructor.js
+++ b/js/src/tests/test262/built-ins/Math/acos/not-a-constructor.js
@@ -25,7 +25,7 @@ assert.sameValue(isConstructor(Math.acos), false, 'isConstructor(Math.acos) must
 
 assert.throws(TypeError, () => {
   new Math.acos();
-}, '`new Math.acos()` throws TypeError');
+});
 
 
 reportCompare(0, 0);