diff --git a/app/src/main/res/values-es/strings.xml b/app/src/main/res/values-es/strings.xml
index 6337b7a31..3e7372924 100644
--- a/app/src/main/res/values-es/strings.xml
+++ b/app/src/main/res/values-es/strings.xml
@@ -656,4 +656,6 @@
     <string name="ok">OK</string>
     <string name="cancel">Cancelar</string>
     <string name="always_display_full_date">Mostrar la fecha completa</string>
+    <string name="custom_filter_is_subtask">Es una subtarea</string>
+    <string name="custom_filter_has_subtask">Tiene subtareas</string>
 </resources>
\ No newline at end of file