diff --git a/stackoverflow-survey.ipynb b/stackoverflow-survey.ipynb
index 83869f6..cd96f03 100644
--- a/stackoverflow-survey.ipynb
+++ b/stackoverflow-survey.ipynb
@@ -208,8 +208,8 @@
     "    if saveto is not None:\n",
     "        plt.savefig(saveto, bbox_inches='tight')\n",
     "    pass\n",
-    "key_x  = \"Have Worked With\"\n",
-    "key_y  = \"Want To Use and Have Used Difference\"\n",
+    "key_x  = \"Users\"\n",
+    "key_y  = \"Potential '\\u0394'Users\"\n",
     "df1    = pd.DataFrame(l1.items(), columns=['Language', key_x])\n",
     "df2    = pd.DataFrame(motiv_diff.items(), columns=['Language', key_y])\n",
     "# chatgpt tells me how to combine df\n",