diff --git a/data/schema/core/addons.cfg b/data/schema/core/addons.cfg
index 60e9f16a92f..7f1184b7a99 100644
--- a/data/schema/core/addons.cfg
+++ b/data/schema/core/addons.cfg
@@ -348,6 +348,7 @@
 			{SIMPLE_KEY music string}
 			{SIMPLE_KEY sound string_list}
 			{DEFAULT_KEY text_layout string bottom}
+			{DEFAULT_KEY text_alignment text_alignment left}
 			{DEFAULT_KEY title_alignment text_alignment left}
 			[tag]
 				name="background_layer"