diff --git a/npbackup/translations/main_gui.en.yml b/npbackup/translations/main_gui.en.yml
index 0824e71..327d11c 100644
--- a/npbackup/translations/main_gui.en.yml
+++ b/npbackup/translations/main_gui.en.yml
@@ -45,6 +45,7 @@ en:
   no_config: Please load / create a configuration before proceeding
   cannot_load_config_keep_current: Cannot load configuration. Keep current configuration
   snapshot_is_empty: Snapshot is empty
+  select_only_one_snapshot: Please select only one snapshot
   cancel_operation: Are you sure you want to cancel the operation? Try to avoid interrupting write operations
   open_existing_file: Open existing config file
   failed_operation: Failed operation, Please check the logs
diff --git a/npbackup/translations/main_gui.fr.yml b/npbackup/translations/main_gui.fr.yml
index 3ea915f..97f0aef 100644
--- a/npbackup/translations/main_gui.fr.yml
+++ b/npbackup/translations/main_gui.fr.yml
@@ -45,6 +45,7 @@ fr:
   no_config: Veuillez charger / créer une configuration avant de procéder
   cannot_load_config_keep_current: Impossible de charger la configuration. Configuration actuelle conservée
   snapshot_is_empty: L'instantané est vide
+  select_only_one_snapshot: Veuillez sélectionner un seul instantané
   cancel_operation: Etes-vous sûr de vouloir annuler l'opération? Essayez d'éviter d'interrompre les opérations d'écriture
   open_existing_file: Ouvrir fichier de configuration existant
   failed_operation: Operation échouée. Vérifier les journaux