diff --git a/HowBadIsMyBatch.ipynb b/HowBadIsMyBatch.ipynb
index a3747a90a91..db9d6b2decc 100644
--- a/HowBadIsMyBatch.ipynb
+++ b/HowBadIsMyBatch.ipynb
@@ -89,18 +89,6 @@
     "    return filterDataFrame(df, dose = dose)\n"
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "id": "5d2d2f93",
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# FK-TODO: inline method\n",
-    "def createAndFilterDataFrameFromFiles(dataDir, manufacturer, dose):\n",
-    "    return filterDataFrame(createDataFrameFromDescrs(readAllVaersDescrs(dataDir)), manufacturer = manufacturer, dose = dose)\n"
-   ]
-  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -390,7 +378,12 @@
     "        self._test_createBatchCodeTable(dataFrame);\n",
     "\n",
     "    def test_createBatchCodeTable(self):\n",
-    "        self._test_createBatchCodeTable(createAndFilterDataFrameFromFiles(\"test/VAERS\", \"MODERNA\", '1'));\n",
+    "        self._test_createBatchCodeTable(\n",
+    "            filterDataFrame(\n",
+    "                createDataFrameFromDescrs(\n",
+    "                    readAllVaersDescrs(\"test/VAERS\")),\n",
+    "                manufacturer = \"MODERNA\",\n",
+    "                dose = '1'))\n",
     "\n",
     "    def _test_createBatchCodeTable(self, dataFrame):\n",
     "        # When\n",
@@ -486,7 +479,12 @@
    "outputs": [],
    "source": [
     "def saveBatchCodeTable(manufacturer, excelFile):\n",
-    "    batchCodeTable = createBatchCodeTable(createAndFilterDataFrameFromFiles(\"VAERS\", manufacturer, '1'))\n",
+    "    batchCodeTable = createBatchCodeTable(\n",
+    "        filterDataFrame(\n",
+    "            createDataFrameFromDescrs(\n",
+    "                readAllVaersDescrs(\"VAERS\")),\n",
+    "            manufacturer = manufacturer,\n",
+    "            dose = '1'))\n",
     "    display(manufacturer, batchCodeTable)\n",
     "    batchCodeTable.to_excel(excelFile)"
    ]