diff --git a/sites/shared/i18n/themes/es.yaml b/sites/shared/i18n/themes/es.yaml
index fb9df52475e..0b6fc4bd17f 100644
--- a/sites/shared/i18n/themes/es.yaml
+++ b/sites/shared/i18n/themes/es.yaml
@@ -5,4 +5,5 @@ lgbtqTheme: Tema LGBTQ
 transTheme: Tema Trans
 pastelTheme: Tema Pastel
 aquaTheme: Tema Aqua
+monochromeTheme: Monochrome Theme
 chooseYourTheme: Elige tu tema