diff --git a/examples/learning/prevnext.html b/examples/learning/prevnext.html
index af55bd030..463527a3d 100644
--- a/examples/learning/prevnext.html
+++ b/examples/learning/prevnext.html
@@ -82,7 +82,7 @@
     });
 
     // Update page counters
-    document.getElementById('page_num').textContent = pageNum;
+    document.getElementById('page_num').textContent = num;
   }
 
   /**