diff --git a/arrays_strings/reverse_string/reverse_string_challenge.ipynb b/arrays_strings/reverse_string/reverse_string_challenge.ipynb
index 499a0de..5fb4f89 100644
--- a/arrays_strings/reverse_string/reverse_string_challenge.ipynb
+++ b/arrays_strings/reverse_string/reverse_string_challenge.ipynb
@@ -121,10 +121,17 @@
     "            ['r', 'a', 'b', ' ', 'o', 'o', 'f'])\n",
     "        print('Success: test_reverse')\n",
     "\n",
+    "    def test_reverse_inplace(self):\n",
+    "        target_list = ['f', 'o', 'o', ' ', 'b', 'a', 'r']\n",
+    "        list_of_chars(target_list)\n",
+    "        assert_equal(target_list, ['r', 'a', 'b', ' ', 'o', 'o', 'f'])\n",
+    "        print('Success: test_reverse_inplace')\n",
+    "\n",
     "\n",
     "def main():\n",
     "    test = TestReverse()\n",
     "    test.test_reverse()\n",
+    "    test.test_reverse_inplace()\n",
     "\n",
     "\n",
     "if __name__ == '__main__':\n",
diff --git a/arrays_strings/reverse_string/test_reverse_string.py b/arrays_strings/reverse_string/test_reverse_string.py
index 688bff7..553d5b3 100644
--- a/arrays_strings/reverse_string/test_reverse_string.py
+++ b/arrays_strings/reverse_string/test_reverse_string.py
@@ -11,10 +11,17 @@ class TestReverse(object):
             ['r', 'a', 'b', ' ', 'o', 'o', 'f'])
         print('Success: test_reverse')
 
+    def test_reverse_inplace(self):
+        target_list = ['f', 'o', 'o', ' ', 'b', 'a', 'r']
+        list_of_chars(target_list)
+        assert_equal(target_list, ['r', 'a', 'b', ' ', 'o', 'o', 'f'])
+        print('Success: test_reverse_inplace')
+
 
 def main():
     test = TestReverse()
     test.test_reverse()
+    test.test_reverse_inplace()
 
 
 if __name__ == '__main__':