diff --git a/libraries/classes/PmdCommon.php b/libraries/classes/PmdCommon.php
index 2b5c1c3de4..ad9e8bbdbe 100644
--- a/libraries/classes/PmdCommon.php
+++ b/libraries/classes/PmdCommon.php
@@ -404,7 +404,7 @@ class PmdCommon
                 DatabaseInterface::CONNECT_CONTROL,
                 DatabaseInterface::QUERY_STORE
             );
-            if (count($min_page_no[0])) {
+            if (isset($min_page_no[0]) && count($min_page_no[0])) {
                 $page_no = $min_page_no[0];
             }
         }