diff --git a/config_default.php b/config_default.php
index 28e70a3..a304f0b 100644
--- a/config_default.php
+++ b/config_default.php
@@ -57,7 +57,7 @@
     /*
      * Height of thumbnail image for OPDS
      */
-    $config['cops_opds_thumbnail_height'] = "40";
+    $config['cops_opds_thumbnail_height'] = "70";
     
     /*
      * Height of thumbnail image for HTML