diff --git a/docs/user/interface/InterfaceDefs.dox b/docs/user/interface/InterfaceDefs.dox
index 05c10c6e21..d66410d751 100644
--- a/docs/user/interface/InterfaceDefs.dox
+++ b/docs/user/interface/InterfaceDefs.dox
@@ -127,7 +127,7 @@
 	Set the width of each button to accomidate the width of the button's
 	label.
 
-	\since BeOS R3
+	\since BeOS R5
 */