diff --git a/.gitignore b/.gitignore
index ef37a96de..89f8a6bf9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,4 +2,3 @@
 *.log
 doc/*.html
 node_modules
-.idea
diff --git a/test/test.js b/test/test.js
index b324e1202..5c1930fa6 100644
--- a/test/test.js
+++ b/test/test.js
@@ -14830,7 +14830,7 @@
   }());
 
   /*--------------------------------------------------------------------------*/
-// sina
+
   QUnit.module('lodash.merge');
 
   (function() {
@@ -14914,9 +14914,9 @@
     QUnit.test('should merge first source object properties to function', function(assert) {
       assert.expect(1);
 
-      const Foo = function () {};
-      var object = { prop: {} },
-        actual = _.merge({prop: Foo}, object);
+      var fn = function() {},
+          object = { 'prop': {} },
+          actual = _.merge({ 'prop': fn }, object);
 
       assert.deepEqual(actual, object);
     });
@@ -14924,24 +14924,26 @@
     QUnit.test('should merge first and second source object properties to function', function(assert) {
       assert.expect(1);
 
-      const fn = function () {};
-      var object = { prop: {} },
-        actual = _.merge({prop: fn}, {prop: fn}, object);
+      var fn = function() {},
+          object = { 'prop': {} },
+          actual = _.merge({ 'prop': fn }, { 'prop': fn }, object);
 
       assert.deepEqual(actual, object);
     });
 
     QUnit.test('should not merge onto function values of sources', function(assert) {
-      assert.expect(2);
+      assert.expect(3);
 
       var source1 = { 'a': function() {} },
           source2 = { 'a': { 'b': 2 } },
+          expected = { 'a': { 'b': 2 } },
           actual = _.merge({}, source1, source2);
 
-      assert.deepEqual(actual, { 'a': { 'b': 2 } });
+      assert.deepEqual(actual, expected);
+      assert.notOk('b' in source1.a);
 
       actual = _.merge(source1, source2);
-      assert.strictEqual(actual.a.b, 2);
+      assert.deepEqual(actual, expected);
     });
 
     QUnit.test('should merge onto non-plain `object` values', function(assert) {