diff --git a/tests/baselines/reference/superCallArgsMustMatch.errors.txt b/tests/baselines/reference/superCallArgsMustMatch.errors.txt
index e9a665acd1..06758b44fe 100644
--- a/tests/baselines/reference/superCallArgsMustMatch.errors.txt
+++ b/tests/baselines/reference/superCallArgsMustMatch.errors.txt
@@ -1,4 +1,4 @@
-tests/cases/compiler/superCallArgsMustMatch.ts(15,15): error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
+tests/cases/compiler/superCallArgsMustMatch.ts(17,15): error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
 
 
 ==== tests/cases/compiler/superCallArgsMustMatch.ts (1 errors) ====
@@ -16,7 +16,9 @@ tests/cases/compiler/superCallArgsMustMatch.ts(15,15): error TS2345: Argument of
     
         constructor() {
     
-            super("hi"); // Should error, base constructor has type T for first arg, which is fixed as number in the extends clause
+            // Should error; base constructor has type T for first arg,
+            // which is instantiated with 'number' in the extends clause
+            super("hi");
                   ~~~~
 !!! error TS2345: Argument of type 'string' is not assignable to parameter of type 'number'.
     
diff --git a/tests/baselines/reference/superCallArgsMustMatch.js b/tests/baselines/reference/superCallArgsMustMatch.js
index 0b772fd39d..e38c519ead 100644
--- a/tests/baselines/reference/superCallArgsMustMatch.js
+++ b/tests/baselines/reference/superCallArgsMustMatch.js
@@ -13,7 +13,9 @@ class T6 extends T5<number>{
 
     constructor() {
 
-        super("hi"); // Should error, base constructor has type T for first arg, which is fixed as number in the extends clause
+        // Should error; base constructor has type T for first arg,
+        // which is instantiated with 'number' in the extends clause
+        super("hi");
 
         var x: number = this.foo;
 
@@ -39,7 +41,9 @@ var T5 = (function () {
 var T6 = (function (_super) {
     __extends(T6, _super);
     function T6() {
-        _super.call(this, "hi"); // Should error, base constructor has type T for first arg, which is fixed as number in the extends clause
+        // Should error; base constructor has type T for first arg,
+        // which is instantiated with 'number' in the extends clause
+        _super.call(this, "hi");
         var x = this.foo;
     }
     return T6;
diff --git a/tests/cases/compiler/superCallArgsMustMatch.ts b/tests/cases/compiler/superCallArgsMustMatch.ts
index a27aff3919..5407c3301f 100644
--- a/tests/cases/compiler/superCallArgsMustMatch.ts
+++ b/tests/cases/compiler/superCallArgsMustMatch.ts
@@ -12,7 +12,9 @@ class T6 extends T5<number>{
 
     constructor() {
 
-        super("hi"); // Should error, base constructor has type T for first arg, which is fixed as number in the extends clause
+        // Should error; base constructor has type T for first arg,
+        // which is instantiated with 'number' in the extends clause
+        super("hi");
 
         var x: number = this.foo;