diff --git a/HowBadIsMyBatch.ipynb b/HowBadIsMyBatch.ipynb
index 9b09fc4307b..b587a747521 100644
--- a/HowBadIsMyBatch.ipynb
+++ b/HowBadIsMyBatch.ipynb
@@ -37,22 +37,22 @@
     "    def readVaersDescr(self, year):\n",
     "        folder = self.dataDir + \"/\" + year + \"VAERSData/\"\n",
     "        return {\n",
-    "            'VAERSDATA': self._readVAERSDATA(folder, year),\n",
-    "            'VAERSVAX': self._readVAERSVAX(folder, year)\n",
-    "            }\n",
+    "                    'VAERSDATA': self._readVAERSDATA(folder + year + \"VAERSDATA.csv\"),\n",
+    "                    'VAERSVAX': self._readVAERSVAX(folder + year + \"VAERSVAX.csv\")\n",
+    "               }\n",
     "\n",
-    "    def _readVAERSDATA(self, folder, year):\n",
+    "    def _readVAERSDATA(self, file):\n",
     "        VAERSDATA = self._read_csv(\n",
-    "            file = folder + year + \"VAERSDATA.csv\",\n",
+    "            file = file,\n",
     "            usecols = ['VAERS_ID', 'DIED', 'L_THREAT', 'DISABLE', 'HOSPITAL', 'ER_VISIT'])\n",
     "        VaersDescrReader._convertColumnsOfDataFrameToNumerics(\n",
     "            VAERSDATA,\n",
     "            ['DIED', 'L_THREAT', 'DISABLE', 'HOSPITAL', 'ER_VISIT'])\n",
     "        return VAERSDATA\n",
     "\n",
-    "    def _readVAERSVAX(self, folder, year):\n",
+    "    def _readVAERSVAX(self, file):\n",
     "        return self._read_csv(\n",
-    "            file = folder + year + \"VAERSVAX.csv\",\n",
+    "            file = file,\n",
     "            usecols = ['VAERS_ID', 'VAX_DOSE_SERIES', 'VAX_TYPE', 'VAX_MANU', 'VAX_LOT'],\n",
     "            dtype = {\"VAX_DOSE_SERIES\": \"string\"})\n",
     "\n",