diff --git a/arrays_strings/str_diff/str_diff_solution.ipynb b/arrays_strings/str_diff/str_diff_solution.ipynb
index c3610f2..7f3a527 100644
--- a/arrays_strings/str_diff/str_diff_solution.ipynb
+++ b/arrays_strings/str_diff/str_diff_solution.ipynb
@@ -81,7 +81,7 @@
     "### Set - Difference\n",
     "\n",
     "* A set is an unordered collection of unique elements.\n",
-    "    * Return a string of a new set with an element in set(t) that is not in set(s).\n",
+    "    * Return a string of a new set with an element in set(t) that is not in set(s)\n",
     "\n",
     "Complexity:\n",
     "* Time: O(m+n), where m and n are the lengths of s, t\n",
@@ -209,9 +209,9 @@
  "metadata": {
   "anaconda-cloud": {},
   "kernelspec": {
-   "display_name": "Python [Root]",
+   "display_name": "Python [Python3]",
    "language": "python",
-   "name": "Python [Root]"
+   "name": "Python [Python3]"
   },
   "language_info": {
    "codemirror_mode": {