diff --git a/test.html b/test.html
index 8a5fb0e93..4eb3a7629 100644
--- a/test.html
+++ b/test.html
@@ -65,7 +65,7 @@ function nextPage() {
 }
 
 function prevPage() {
-    if (pageNum > 0)
+    if (pageNum > 1)
         --pageNum;
     displayPage(pageNum);
 }