diff --git a/HitCounters/extension.json b/HitCounters/extension.json
index 3b91b83..db6b890 100644
--- a/HitCounters/extension.json
+++ b/HitCounters/extension.json
@@ -47,7 +47,8 @@
 	"config": {
 		"HitcounterUpdateFreq": 1,
 		"DisableCounters": false,
-		"EnableAddPageId": false
+		"EnableAddPageId": false,
+		"EnableAddTextLength": false
 	},
 	"manifest_version": 1
 }
diff --git a/HitCounters/includes/SpecialPopularPages.php b/HitCounters/includes/SpecialPopularPages.php
index 83f4a1e..babf18c 100644
--- a/HitCounters/includes/SpecialPopularPages.php
+++ b/HitCounters/includes/SpecialPopularPages.php
@@ -61,8 +61,8 @@ class SpecialPopularPages extends QueryPage {
 	 * @SuppressWarnings(PHPMD.UnusedFormalParameter)
 	 */
 	public function formatResult( $skin, $result ) {
-		$enableAddTextLength = $this->getConfig()->get( 'wgEnableAddTextLength' );
-		$enableAddPageId = $this->getConfig()->get( 'wgEnableAddPageId' );
+		$enableAddTextLength = $this->getConfig()->get( 'EnableAddTextLength' );
+		$enableAddPageId = $this->getConfig()->get( 'EnableAddPageId' );
 
 		$title = Title::makeTitleSafe( $result->namespace, $result->title );
 		if ( !$title ) {