diff --git a/block_qr.php b/block_qr.php
index 67b0a4b..d6cd2c3 100644
--- a/block_qr.php
+++ b/block_qr.php
@@ -233,7 +233,7 @@ public function get_content() {
         }
 
         // Short link option only in edit mode.
-        if ($USER->editing == 0) {
+        if (empty($USER->editing)) {
             $fullview = false;
         } else {
             $fullview = true;