diff --git a/lib.php b/lib.php
index c819ad1..fa2aa7c 100644
--- a/lib.php
+++ b/lib.php
@@ -343,12 +343,16 @@ function get_logo_url($type = 'header') {
  */
 function theme_klass_render_slideimg($p, $sliname) {
     global $PAGE, $OUTPUT;
+    static $theme;
+    if (empty($theme)) {
+        $theme = theme_config::load('klass');
+    }
     $nos = theme_klass_get_setting('numberofslides');
     $i = $p % 3;
     $slideimage = $OUTPUT->image_url('home/slide'.$i, 'theme');
     // Get slide image or fallback to default.
     if (theme_klass_get_setting($sliname)) {
-        $slideimage = $PAGE->theme->setting_file_url($sliname , $sliname);
+        $slideimage = $theme->setting_file_url($sliname , $sliname);
     }
     return $slideimage;
 }
@@ -435,4 +439,4 @@ function theme_klass_lang($key = '') {
     } else {
         return $key;
     }
-}
\ No newline at end of file
+}