diff --git a/src/MDConcMarkingPosition.php b/src/MDConcMarkingPosition.php
index 8bd8619..f731ae4 100644
--- a/src/MDConcMarkingPosition.php
+++ b/src/MDConcMarkingPosition.php
@@ -256,6 +256,12 @@ final class MDConcMarkingPosition implements MDImporterConcordanceListInterface
         "Unterseite" => "underside",
         "unterhalb" => "underside",
 
+        // mock title
+        'mock title' => 'mock_title',
+        'Bastardtitle' => 'mock_title',
+        'Schmutztitel' => 'mock_title',
+        'Vorsatztitel' => 'mock_title',
+
         // Misc.
         "x" => "other",
         "VS" => "other",