diff --git a/mod/quiz/report/overview/report.php b/mod/quiz/report/overview/report.php
index e5c0e93..ffcf46b 100644
--- a/mod/quiz/report/overview/report.php
+++ b/mod/quiz/report/overview/report.php
@@ -66,8 +66,8 @@ class quiz_overview_report extends quiz_attempts_report {
                 $options, $groupstudentsjoins, $studentsjoins, $questions, $options->get_url());
         $filename = quiz_report_download_filename(get_string('overviewfilename', 'quiz_overview'),
                 $courseshortname, $quiz->name);
-        $table->is_downloading($options->download, $filename,
-                $courseshortname . ' ' . format_string($quiz->name, true));
+        $sheetname = str_replace('"', '', $courseshortname . ' ' . format_string($quiz->name, true));
+        $table->is_downloading($options->download, $filename, $sheetname);
         if ($table->is_downloading()) {
             raise_memory_limit(MEMORY_EXTRA);
         }