diff --git a/functions.php b/functions.php
index 27b1ceb..6efa365 100644
--- a/functions.php
+++ b/functions.php
@@ -150,7 +150,7 @@ class AbstimmIDd {
 		$event_title = str_replace(' ', '_', addslashes($body->event_title));
 
 		$file_path = $this->cfg['export']['path'] . '/' . date('Y-m-d') .
-			"__{$event_title}__Abstimmung-$vote_round";
+			"__{".escapeshellarg($event_title)."}__Abstimmung-$vote_round";
 
 		$sha256_txt = $this->create_text_file($body, "$file_path.txt");
 		$sha256_pdf = $this->create_pdf_file($body, "$file_path.pdf");