diff --git a/course/category.php b/course/category.php
index 86cfeb5f4bf..0ec92c7bcd4 100644
--- a/course/category.php
+++ b/course/category.php
@@ -236,7 +236,7 @@
     unset($course);    // To avoid unwanted language effects later
 
     $courses = get_courses_page($category->id, 'c.sortorder ASC', 
-                                'c.id,c.sortorder,c.shortname,c.fullname,c.summary,c.visible,c.teacher', 
+                                'c.id,c.sortorder,c.shortname,c.fullname,c.summary,c.visible,c.teacher,c.guest,c.password', 
                                 $totalcount, $page*$perpage, $perpage);
     $numcourses = count($courses);
 
@@ -357,17 +357,17 @@
                 echo "</td>";
             } else {
                 echo "<td align=\"right\">";
-                if ($acourse->guest ) {
+                if (!empty($acourse->guest)) {
                     echo '<a href="view.php?id='.$acourse->id.'"><img hspace="2" title="'.
                          $strallowguests.'" alt="" height="16" width="16" border="0" src="'.
                          $pixpath.'/i/user.gif" /></a>';
                 }
-                if ($acourse->password) {
+                if (!empty($acourse->password)) {
                     echo '<a href="view.php?id='.$acourse->id.'"><img hspace="2" title="'.
                          $strrequireskey.'" alt="" height="16" width="16" border="0" src="'.
                          $pixpath.'/i/key.gif" /></a>';
                 }
-                if ($acourse->summary) {
+                if (!empty($acourse->summary)) {
                     link_to_popup_window ("/course/info.php?id=$acourse->id", "courseinfo", 
                                           '<img hspace="2" alt="info" height="16" width="16" border="0" src="'.$pixpath.'/i/info.gif" />', 
                                            400, 500, $strsummary);