diff --git a/API_Basics.ipynb b/API_Basics.ipynb
index 785ebe8..7abc87a 100644
--- a/API_Basics.ipynb
+++ b/API_Basics.ipynb
@@ -157,7 +157,7 @@
         "      return joke, 201\r\n",
         "\r\n",
         "    def delete(self, id='c'):\r\n",
-        "        if id is 'c':\r\n",
+        "        if id == 'c':\r\n",
         "          return make_response(jsonify({'error': 'ID is missing'}), 400)\r\n",
         "        global dev_jokes\r\n",
         "        dev_jokes = [joke for joke in dev_jokes if joke[\"id\"] != id]\r\n",
@@ -464,4 +464,4 @@
       "outputs": []
     }
   ]
-}
\ No newline at end of file
+}