diff --git a/doc/classes/TabContainer.xml b/doc/classes/TabContainer.xml
index 4cf7af8e8f..22d96d75f4 100644
--- a/doc/classes/TabContainer.xml
+++ b/doc/classes/TabContainer.xml
@@ -155,10 +155,13 @@
 	</signals>
 	<constants>
 		<constant name="ALIGN_LEFT" value="0" enum="TabAlign">
+			Align the tabs to the left.
 		</constant>
 		<constant name="ALIGN_CENTER" value="1" enum="TabAlign">
+			Align the tabs to the center.
 		</constant>
 		<constant name="ALIGN_RIGHT" value="2" enum="TabAlign">
+			Align the tabs to the right.
 		</constant>
 	</constants>
 	<theme_items>