diff --git a/package.json b/package.json
index 4f4b6451..434d71f2 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "csv-import-react",
-  "version": "1.0.12",
+  "version": "1.0.13",
   "description": "Open-source CSV and XLS/XLSX file importer for React and JavaScript",
   "main": "build/index.js",
   "module": "build/index.esm.js",
diff --git a/src/importer/features/map-columns/hooks/useMapColumnsTable.tsx b/src/importer/features/map-columns/hooks/useMapColumnsTable.tsx
index 427e8665..cc805cb8 100644
--- a/src/importer/features/map-columns/hooks/useMapColumnsTable.tsx
+++ b/src/importer/features/map-columns/hooks/useMapColumnsTable.tsx
@@ -8,6 +8,7 @@ import stringsSimilarity from "../../../utils/stringSimilarity";
 import { TemplateColumnMapping } from "../types";
 import style from "../style/MapColumns.module.scss";
 
+
 export default function useMapColumnsTable(
   uploadColumns: UploadColumn[],
   templateColumns: TemplateColumn[] = [],
@@ -25,14 +26,14 @@ export default function useMapColumnsTable(
 
   const checkSimilarity = (templateColumnKey: string, uploadColumnName: string) => {
     const templateColumnKeyFormatted = templateColumnKey.replace(/_/g, " ");
-    return stringsSimilarity(templateColumnKeyFormatted, uploadColumnName.toLowerCase()) > 0.9;
+    return stringsSimilarity(templateColumnKeyFormatted, uploadColumnName.toString().toLowerCase()) > 0.9;
   };
 
   const isSuggestedMapping = (templateColumn: TemplateColumn, uploadColumnName: string) => {
     if (!templateColumn?.suggested_mappings) {
       return false;
     }
-    return templateColumn.suggested_mappings.some((suggestion) => suggestion.toLowerCase() === uploadColumnName.toLowerCase());
+    return templateColumn.suggested_mappings.some((suggestion) => suggestion.toLowerCase() === uploadColumnName.toString().toLowerCase());
   };
 
   const [values, setValues] = useState<{ [key: number]: TemplateColumnMapping }>(() => {
@@ -140,4 +141,4 @@ export default function useMapColumnsTable(
     });
   }, [values, isLoading]);
   return { rows, formValues: values };
-}
+}
\ No newline at end of file