diff --git a/mod/quiz/view.php b/mod/quiz/view.php
index 4bcb1bf7c58..4c00346dc0e 100644
--- a/mod/quiz/view.php
+++ b/mod/quiz/view.php
@@ -200,6 +200,11 @@
                 $strconfirmstartattempt = addslashes(get_string("confirmstartattempt","quiz"));
                 $datecompleted  = "\n".'<script language="javascript" type="text/javascript">';
                 $datecompleted .= "\n<!--\n"; // -->
+                if (!empty($CFG->usesid)) {
+                    $attempturl=sid_process_url("attempt.php?id=$cm->id");
+                } else {
+                    $attempturl="attempt.php?id=$cm->id";
+                };
                 if (!empty($quiz->popup)) {
                     $datecompleted .= "var windowoptions = 'left=0, top=0, height='+window.screen.height+
                      ', width='+window.screen.width+', channelmode=yes, fullscreen=yes, scrollbars=yes, '+
@@ -209,9 +214,9 @@
                     if ($quiz->timelimit) {
                         $jslink .=  "if (confirm('$strconfirmstartattempt')) ";
                     }
-                    $jslink .= "var popup = window.open(\\'attempt.php?id=$cm->id\\', \\'quizpopup\\', windowoptions);";
+                    $jslink .= "var popup = window.open(\\'$attempturl\\', \\'quizpopup\\', windowoptions);";
                 } else {
-                    $jslink = "attempt.php?id=$cm->id";
+                    $jslink = $attempturl;
                 }
 
                 $linktext = get_string('continueattemptquiz', 'quiz');
diff --git a/mod/quiz/view_js.php b/mod/quiz/view_js.php
index b184137a9b6..830372ed9f2 100644
--- a/mod/quiz/view_js.php
+++ b/mod/quiz/view_js.php
@@ -5,13 +5,18 @@ $window = (!empty($quiz->popup)) ? 'quizpopup' : '_self';
 $windowoptions = ($window == '_self') ? '' : "left=0, top=0, height='+window.screen.height+', width='+window.screen.width+', channelmode=yes, fullscreen=yes, scrollbars=yes, resizeable=no, directories=no, toolbar=no, titlebar=no, location=no, status=no, menubar=no";
 $buttontext = ($numattempts) ? get_string('reattemptquiz', 'quiz') : get_string('attemptquiznow', 'quiz');
 $buttontext = ($unfinished) ? get_string('continueattemptquiz', 'quiz') : $buttontext;
-?>
+if (!empty($CFG->usesid)) {
+    $attempturl=sid_process_url("attempt.php?id=$cm->id");
+} else {
+    $attempturl="attempt.php?id=$cm->id";
+};
+ ?>
 
 <script language="javascript" type="text/javascript">
 <!--
 document.write('<input type="button" value="<?php echo $buttontext ?>" '+
                'onclick="javascript: <?php if ($quiz->timelimit and !$unfinished) echo "if (confirm(\\'$strconfirmstartattempt\\'))"; ?> '+
-               'window.open(\'attempt.php?id=<?php echo $cm->id ?>\', \'<?php echo $window ?>\', \'<?php echo $windowoptions ?>\'); " />');
+               'window.open(\'<?php echo $attempturl ?>\', \'<?php echo $window ?>\', \'<?php echo $windowoptions ?>\'); " />');
 // -->
 </script>
 <noscript>