diff --git a/test/language/expressions/compound-assignment/11.13.2-45-s.js b/test/language/expressions/compound-assignment/11.13.2-45-s.js
index 362b297ea654e0af8d756b8bf94e072f86fc76a7..562d03dbe67f8915fc388ca63b326e07f0adc194 100644
--- a/test/language/expressions/compound-assignment/11.13.2-45-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-45-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-45-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(*=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-46-s.js b/test/language/expressions/compound-assignment/11.13.2-46-s.js
index 5723292fc6f8d802df1c857e9ba5d568a855c83a..a6e10839e7fcedc6ce6bdd3d4ac08c1bdc8d7437 100644
--- a/test/language/expressions/compound-assignment/11.13.2-46-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-46-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-46-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(/=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-47-s.js b/test/language/expressions/compound-assignment/11.13.2-47-s.js
index ed0e21d4421ce8219a1341f8dbe2dc4f5d9b1a33..f2593a40fd235a61f2d91677b9e415f235640faa 100644
--- a/test/language/expressions/compound-assignment/11.13.2-47-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-47-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-47-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(%=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-48-s.js b/test/language/expressions/compound-assignment/11.13.2-48-s.js
index 360fb67b925abab488d165ac1921228c8b5e7a9d..196d5d8c9a928e01d5460e831e2b2aa0a0728dc6 100644
--- a/test/language/expressions/compound-assignment/11.13.2-48-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-48-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-48-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(+=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-49-s.js b/test/language/expressions/compound-assignment/11.13.2-49-s.js
index 020a4066d4f24de1c8ac6732b88e5072a0a48882..59e49a8ce6b95b4d40694d4c36bb4635cb940582 100644
--- a/test/language/expressions/compound-assignment/11.13.2-49-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-49-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-49-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(-=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-50-s.js b/test/language/expressions/compound-assignment/11.13.2-50-s.js
index 1ab47ea9bb4acdcc74669bae79693b360ea8321e..21d71a75bfc91b613d9488043a8957e147c79d53 100644
--- a/test/language/expressions/compound-assignment/11.13.2-50-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-50-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-50-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(<<=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-51-s.js b/test/language/expressions/compound-assignment/11.13.2-51-s.js
index 1a3d46b8aef32582fcbcced2fbc674992d4af3a6..ff95775f2957f34ff59b2c7c60aa99589900b04c 100644
--- a/test/language/expressions/compound-assignment/11.13.2-51-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-51-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-51-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(>>=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-53-s.js b/test/language/expressions/compound-assignment/11.13.2-53-s.js
index 913765e6c7ea3acd50154b9f3436ec42cdd8d08b..3dd93966a4cbfc7aae2c251b658efb33fd7e6b86 100644
--- a/test/language/expressions/compound-assignment/11.13.2-53-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-53-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-53-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(&=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-54-s.js b/test/language/expressions/compound-assignment/11.13.2-54-s.js
index ef7609354840ae3134787b3efbc627e38da93e8c..501dd672bf5dadb1377fdce9e530ff941ad12bd6 100644
--- a/test/language/expressions/compound-assignment/11.13.2-54-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-54-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-54-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(^=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]
diff --git a/test/language/expressions/compound-assignment/11.13.2-55-s.js b/test/language/expressions/compound-assignment/11.13.2-55-s.js
index 410f217e88e248094aa10068511963ee038ace6a..6427fa23ca3e1de5e53e250a64d240b24dbeb9e9 100644
--- a/test/language/expressions/compound-assignment/11.13.2-55-s.js
+++ b/test/language/expressions/compound-assignment/11.13.2-55-s.js
@@ -9,7 +9,7 @@ es5id: 11.13.2-55-s
 description: >
     Strict Mode - TypeError is thrown if The LeftHandSide of a
     Compound Assignment operator(|=) is a reference to a non-existent
-    property of an object whose [[Extensible]] internal property if
+    property of an object whose [[Extensible]] internal property is
     false
 flags: [onlyStrict]
 includes: [runTestCase.js]