diff --git a/test/webkit/class-syntax-declaration-expected.txt b/test/webkit/class-syntax-declaration-expected.txt
index f1466c5114..a424edfe90 100644
--- a/test/webkit/class-syntax-declaration-expected.txt
+++ b/test/webkit/class-syntax-declaration-expected.txt
@@ -32,12 +32,12 @@ PASS class X { constructor() {} static set prototype() {} } threw exception Synt
 PASS class X { constructor() {} prototype() { return instanceMethodValue; } } did not throw exception.
 PASS class X { constructor() {} prototype() { return instanceMethodValue; } }; (new X).prototype() is instanceMethodValue
 PASS class X { constructor() {} set foo(a) {} } did not throw exception.
-FAIL class X { constructor() {} set foo({x, y}) {} } should not throw exception. Threw exception SyntaxError: Unexpected token {.
+PASS class X { constructor() {} set foo({x, y}) {} } did not throw exception.
 PASS class X { constructor() {} set foo() {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
 PASS class X { constructor() {} set foo(a, b) {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
 PASS class X { constructor() {} get foo() {} } did not throw exception.
 PASS class X { constructor() {} get foo(x) {} } threw exception SyntaxError: Getter must not have any formal parameters..
-PASS class X { constructor() {} get foo({x, y}) {} } threw exception SyntaxError: Unexpected token {.
+PASS class X { constructor() {} get foo({x, y}) {} } threw exception SyntaxError: Getter must not have any formal parameters..
 PASS successfullyParsed is true
 
 TEST COMPLETE
diff --git a/test/webkit/class-syntax-declaration.js b/test/webkit/class-syntax-declaration.js
index 3c9aed7441..f8ecdbb151 100644
--- a/test/webkit/class-syntax-declaration.js
+++ b/test/webkit/class-syntax-declaration.js
@@ -21,7 +21,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --harmony-sloppy
+// Flags: --harmony-sloppy --harmony-destructuring-bind
 
 description('Tests for ES6 class syntax declarations');
 
diff --git a/test/webkit/class-syntax-expression-expected.txt b/test/webkit/class-syntax-expression-expected.txt
index aa1cfb76b0..5bcaf002f8 100644
--- a/test/webkit/class-syntax-expression-expected.txt
+++ b/test/webkit/class-syntax-expression-expected.txt
@@ -30,12 +30,12 @@ PASS x = class { constructor() {} static set prototype() {} } threw exception Sy
 PASS x = class  { constructor() {} prototype() { return instanceMethodValue; } } did not throw exception.
 PASS x = class { constructor() {} prototype() { return instanceMethodValue; } }; (new x).prototype() is instanceMethodValue
 PASS x = class { constructor() {} set foo(a) {} } did not throw exception.
-FAIL x = class { constructor() {} set foo({x, y}) {} } should not throw exception. Threw exception SyntaxError: Unexpected token {.
+PASS x = class { constructor() {} set foo({x, y}) {} } did not throw exception.
 PASS x = class { constructor() {} set foo() {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
 PASS x = class { constructor() {} set foo(a, b) {} } threw exception SyntaxError: Setter must have exactly one formal parameter..
 PASS x = class { constructor() {} get foo() {} } did not throw exception.
 PASS x = class { constructor() {} get foo(x) {} } threw exception SyntaxError: Getter must not have any formal parameters..
-PASS x = class { constructor() {} get foo({x, y}) {} } threw exception SyntaxError: Unexpected token {.
+PASS x = class { constructor() {} get foo({x, y}) {} } threw exception SyntaxError: Getter must not have any formal parameters..
 PASS successfullyParsed is true
 
 TEST COMPLETE
diff --git a/test/webkit/class-syntax-expression.js b/test/webkit/class-syntax-expression.js
index 3272b81f7e..182afb1ff0 100644
--- a/test/webkit/class-syntax-expression.js
+++ b/test/webkit/class-syntax-expression.js
@@ -21,7 +21,7 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --harmony-sloppy
+// Flags: --harmony-sloppy --harmony-destructuring-bind
 
 description('Tests for ES6 class syntax expressions');