diff --git a/theme/custom_corners/footer.html b/theme/custom_corners/footer.html
index 1b7d69e8ae8..d7ad6c16435 100644
--- a/theme/custom_corners/footer.html
+++ b/theme/custom_corners/footer.html
@@ -3,8 +3,8 @@
 <!-- START OF FOOTER -->
 <?php 
     global $CFG, $COURSE; 
-    if (function_exists('get_in_popup')) {
-        $inpopup = get_in_popup();
+    if (function_exists('is_in_popup')) {
+        $inpopup = is_in_popup();
     } else {
         $inpopup = false;
     }
diff --git a/theme/custom_corners/header.html b/theme/custom_corners/header.html
index 57d089e540e..d5f4bc9e198 100644
--- a/theme/custom_corners/header.html
+++ b/theme/custom_corners/header.html
@@ -16,8 +16,8 @@
 
         global $PAGE;
         
-        if (function_exists('get_in_popup')) {
-            $inpopup = get_in_popup();
+        if (function_exists('is_in_popup')) {
+            $inpopup = is_in_popup();
         } else {
             $inpopup = false;
         }