diff --git a/language/en_UK/admin.lang.php b/language/en_UK/admin.lang.php
index 83b969d2f..bb8121fa6 100644
--- a/language/en_UK/admin.lang.php
+++ b/language/en_UK/admin.lang.php
@@ -1351,4 +1351,6 @@ $lang['Activate button "%s"'] = 'Activate button "%s"';
 $lang['Detect and avoid duplicates during upload'] = 'Detect and avoid duplicates during upload';
 $lang['During upload, if Piwigo detects the photo already exists, associate the existing photo to the destination album, without duplicating file'] = 'During upload, if Piwigo detects the photo already exists, associate the existing photo to the destination album, without duplicating file';
 $lang['%d files'] = "%d files";
+$lang['Shrink'] = 'Shrink';
+$lang['Expand'] = 'Expand';
 // Leave this line empty
diff --git a/language/fr_FR/admin.lang.php b/language/fr_FR/admin.lang.php
index a88f6cb8f..7b005e18f 100644
--- a/language/fr_FR/admin.lang.php
+++ b/language/fr_FR/admin.lang.php
@@ -1351,4 +1351,6 @@ $lang['Activate button "%s"'] = 'Afficher le bouton "%s"';
 $lang['Detect and avoid duplicates during upload'] = 'Détecter et éviter les doublons à l\'import';
 $lang['During upload, if Piwigo detects the photo already exists, associate the existing photo to the destination album, without duplicating file'] = 'Pendant l\'ajout de photo, si Piwigo détecte que la photo existe déjà, associer la photo existante à l\'album de destination, sans dupliquer le fichier.';
 $lang['%d files'] = "%d fichiers";
+$lang['Shrink'] = 'Réduire';
+$lang['Expand'] = 'Agrandir';
 // Leave this line empty