diff --git a/tests/baselines/reference/underscoreThisInDerivedClass02.errors.txt b/tests/baselines/reference/underscoreThisInDerivedClass02.errors.txt
new file mode 100644
index 00000000000..f7e0494c884
--- /dev/null
+++ b/tests/baselines/reference/underscoreThisInDerivedClass02.errors.txt
@@ -0,0 +1,25 @@
+tests/cases/compiler/underscoreThisInDerivedClass02.ts(14,5): error TS2377: Constructors for derived classes must contain a 'super' call.
+
+
+==== tests/cases/compiler/underscoreThisInDerivedClass02.ts (1 errors) ====
+    // @target es5
+    
+    // Original test intent:
+    // Errors on '_this' should be reported in derived constructors,
+    // even if 'super()' is not called.
+    
+    class C {
+        constructor() {
+            return {};
+        }
+    }
+    
+    class D extends C {
+        constructor() {
+        ~~~~~~~~~~~~~~~
+            var _this = "uh-oh?";
+    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+        }
+    ~~~~~
+!!! error TS2377: Constructors for derived classes must contain a 'super' call.
+    }
\ No newline at end of file
diff --git a/tests/baselines/reference/underscoreThisInDerivedClass02.js b/tests/baselines/reference/underscoreThisInDerivedClass02.js
new file mode 100644
index 00000000000..c1e9494376b
--- /dev/null
+++ b/tests/baselines/reference/underscoreThisInDerivedClass02.js
@@ -0,0 +1,44 @@
+//// [underscoreThisInDerivedClass02.ts]
+// @target es5
+
+// Original test intent:
+// Errors on '_this' should be reported in derived constructors,
+// even if 'super()' is not called.
+
+class C {
+    constructor() {
+        return {};
+    }
+}
+
+class D extends C {
+    constructor() {
+        var _this = "uh-oh?";
+    }
+}
+
+//// [underscoreThisInDerivedClass02.js]
+// @target es5
+var __extends = (this && this.__extends) || function (d, b) {
+    for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
+    function __() { this.constructor = d; }
+    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+};
+// Original test intent:
+// Errors on '_this' should be reported in derived constructors,
+// even if 'super()' is not called.
+var C = (function () {
+    function C() {
+        return {};
+    }
+    return C;
+}());
+var D = (function (_super) {
+    __extends(D, _super);
+    function D() {
+        var _this;
+        var _this = "uh-oh?";
+        return _this;
+    }
+    return D;
+}(C));