2 files changed, 4 insertions, 1 deletions

diff --git a/application/Updater.php b/application/Updater.php
index 2a4c807c..c2aa1568 100644
--- a/application/Updater.php
+++ b/application/Updater.php
@@ -511,7 +511,7 @@ class Updater
 
         if ($thumbnailsEnabled) {
             $this->session['warnings'][] = t(
-                'You have enabled thumbnails. <a href="?do=thumbs_update">Please synchonize them</a>.'
+                'You have enabled or changed thumbnails mode. <a href="?do=thumbs_update">Please synchronize them</a>.'
             );
         }
 
diff --git a/application/config/ConfigManager.php b/application/config/ConfigManager.php
index 96e2e912..32aaea48 100644
--- a/application/config/ConfigManager.php
+++ b/application/config/ConfigManager.php
@@ -384,6 +384,9 @@ class ConfigManager
         $this->setEmpty('redirector.url', '');
         $this->setEmpty('redirector.encode_url', true);
 
+        $this->setEmpty('thumbnails.width', '125');
+        $this->setEmpty('thumbnails.height', '90');
+
         $this->setEmpty('translation.language', 'auto');
         $this->setEmpty('translation.mode', 'php');
         $this->setEmpty('translation.extensions', []);