diff --git a/arrays-strings/reverse_string.ipynb b/arrays-strings/reverse_string.ipynb
index d7d0515..5700248 100644
--- a/arrays-strings/reverse_string.ipynb
+++ b/arrays-strings/reverse_string.ipynb
@@ -46,8 +46,6 @@
    "source": [
     "## Test Cases\n",
     "\n",
-    "*Identifying and running through general and edge cases are important.  You generally will not be asked to write a unit test like what is shown below.*\n",
-    "\n",
     "* NULL input\n",
     "* '' -> ''\n",
     "* 'foo bar' -> 'rab oof'"
@@ -131,6 +129,13 @@
     "## Unit Test"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "*It is important to identify and run through general and edge cases from the [Test Cases](#Test-Cases) section by hand.  You generally will not be asked to write a unit test like what is shown below.*"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": 3,