diff --git a/calendar/export_basic.html b/calendar/export_basic.html
index 30bffecb77f..f6d954ba4c0 100644
--- a/calendar/export_basic.html
+++ b/calendar/export_basic.html
@@ -47,9 +47,9 @@ function generate_url() {
         preset_time = "recentupcoming";
     }
 
-    url = "<?php echo $CFG->wwwroot; ?>/calendar/export_execute.php?preset_what=" + preset_what + "&amp;preset_time=" + preset_time + "&amp;username=<?php echo $usernameencoded; ?>&amp;authtoken=<?php echo $authtoken; ?>";
-    document.getElementById("url").innerText = url;
-    document.getElementById("url").innerHTML = url; //Need this as well, for Firefox
+    urlstr = "<?php echo $CFG->wwwroot; ?>/calendar/export_execute.php?preset_what=" + preset_what + "&amp;preset_time=" + preset_time + "&amp;username=<?php echo $usernameencoded; ?>&amp;authtoken=<?php echo $authtoken; ?>";
+    document.getElementById("url").innerText = urlstr;
+    document.getElementById("url").innerHTML = urlstr; //Need this as well, for Firefox
 
     document.getElementById("urlbox").style.display = "block";
 }