diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 9306e5d76..d4ea4827b 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -637,4 +637,7 @@
     <string name="show_pages_thumbs_summary">Habilite la pestaña \"Páginas\" en la pantalla de detalles</string>
     <string name="error_no_data_received">No se recibieron datos del servidor</string>
     <string name="unsupported_backup_message">Por favor, seleccione un archivo de copia de seguridad de Kotatsu adecuado</string>
+    <string name="hours_short">%d h</string>
+    <string name="hours_minutes_short">%1$d h %2$d m</string>
+    <string name="minutes_short">%d m</string>
 </resources>
\ No newline at end of file