diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-arguments-in-formal-parameters.js b/test/language/expressions/object/method-definition/early-errors-object-method-arguments-in-formal-parameters.js
index 4d67144a28..a7266b66b4 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-arguments-in-formal-parameters.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-arguments-in-formal-parameters.js
@@ -10,6 +10,6 @@ negative:
   type: SyntaxError
 flags: [onlyStrict]
 ---*/
-!{
+({
   async foo (arguments) { }
-}
+})
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-async-lineterminator.js b/test/language/expressions/object/method-definition/early-errors-object-method-async-lineterminator.js
index 1a87c5d857..35d23cf6fc 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-async-lineterminator.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-async-lineterminator.js
@@ -14,7 +14,7 @@ negative:
   type: SyntaxError
 ---*/
 
-!{
+({
   async
   foo() { }
-}
+})
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals-default.js b/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals-default.js
index 8b6dc5ebff..256aeb536b 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals-default.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals-default.js
@@ -9,7 +9,7 @@ negative:
   phase: early
   type: SyntaxError
 ---*/
-!{
+({
   async foo (x = await) {  }
-}
+})
 
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals.js b/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals.js
index c606a9a449..566c98f698 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-await-in-formals.js
@@ -9,6 +9,6 @@ negative:
   phase: early
   type: SyntaxError
 ---*/
-!{
+({
   async foo (await) {  }
-}
+})
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-body-contains-super-call.js b/test/language/expressions/object/method-definition/early-errors-object-method-body-contains-super-call.js
index 8f8852146c..9a226b5669 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-body-contains-super-call.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-body-contains-super-call.js
@@ -9,6 +9,6 @@ negative:
   phase: early
   type: SyntaxError
 ---*/
-!{
+({
   async foo () { super() }
-}
+})
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-duplicate-parameters.js b/test/language/expressions/object/method-definition/early-errors-object-method-duplicate-parameters.js
index aee8ea55e8..0f135f6294 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-duplicate-parameters.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-duplicate-parameters.js
@@ -10,6 +10,6 @@ negative:
   phase: early
   type: SyntaxError
 ---*/
-!{
+({
   async foo(a, a) { }
-}
+})
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-eval-in-formal-parameters.js b/test/language/expressions/object/method-definition/early-errors-object-method-eval-in-formal-parameters.js
index b80ee27ac1..b1a0da9fa5 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-eval-in-formal-parameters.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-eval-in-formal-parameters.js
@@ -10,6 +10,6 @@ negative:
   type: SyntaxError
 flags: [onlyStrict]
 ---*/
-!{
+({
   async foo(eval) { }
-}
+})
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-formals-body-duplicate.js b/test/language/expressions/object/method-definition/early-errors-object-method-formals-body-duplicate.js
index 62bc0144e4..a356280bde 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-formals-body-duplicate.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-formals-body-duplicate.js
@@ -10,6 +10,6 @@ negative:
   type: SyntaxError
 ---*/
 
-!{
+({
   async function foo(bar) { let bar; }
-}
+})
diff --git a/test/language/expressions/object/method-definition/early-errors-object-method-formals-contains-super-call.js b/test/language/expressions/object/method-definition/early-errors-object-method-formals-contains-super-call.js
index b3b50267ad..afc07f5347 100644
--- a/test/language/expressions/object/method-definition/early-errors-object-method-formals-contains-super-call.js
+++ b/test/language/expressions/object/method-definition/early-errors-object-method-formals-contains-super-call.js
@@ -9,6 +9,6 @@ negative:
   phase: early
   type: SyntaxError
 ---*/
-!{
+({
   async foo(foo = super()) { }
-}
+})