diff --git a/lcl/extctrls.pp b/lcl/extctrls.pp
index e3b615403e..60db2b848e 100644
--- a/lcl/extctrls.pp
+++ b/lcl/extctrls.pp
@@ -1038,6 +1038,7 @@ type
     property LabelPosition;
     property LabelSpacing;
     property MaxLength;
+    property NumbersOnly;
     property ParentBidiMode;
     property ParentColor;
     property ParentDoubleBuffered;