diff --git a/webapps/polygon_analysis_editor/app.js b/webapps/polygon_analysis_editor/app.js
index 7678ffb..66dc61f 100644
--- a/webapps/polygon_analysis_editor/app.js
+++ b/webapps/polygon_analysis_editor/app.js
@@ -637,6 +637,6 @@ function downloadCsv() {
     }
     const headers = Object.keys(overlapCsvData[0]);
     const rows = overlapCsvData.map(row => headers.map(h => row[h]).join(';'));
-    const csvContent = [headers.join(';')].concat(rows).join('\n');
+    const csvContent = [headers.join(',')].concat(rows).join('\n');
     downloadText(csvContent, `${originalFileName}_overlap_details.csv`);
 }