diff --git a/nise-frontend/src/corelib/service/download-files.service.ts b/nise-frontend/src/corelib/service/download-files.service.ts
index 5ee2f95..b459fb3 100644
--- a/nise-frontend/src/corelib/service/download-files.service.ts
+++ b/nise-frontend/src/corelib/service/download-files.service.ts
@@ -23,7 +23,15 @@ export class DownloadFilesService {
     for (const row of input) {
       let rowData: string[] = [];
       for (const column of columns) {
-        rowData.push((row as Record<string, string>)[column]);
+        let value = (row as Record<string, any>)[column];
+
+        if (typeof value === 'string') {
+          value = value.replaceAll(',', ';');
+        } else if (Array.isArray(value)) {
+          value = value.join(';');
+        }
+
+        rowData.push(value);
       }
 
       csvData += rowData.join(',') + '\n';