diff --git a/docs/doxygen/overviews/xrc_format.h b/docs/doxygen/overviews/xrc_format.h
index 1355ede62c..72767dce96 100644
--- a/docs/doxygen/overviews/xrc_format.h
+++ b/docs/doxygen/overviews/xrc_format.h
@@ -2151,8 +2151,8 @@ class-specific properties. All classes support the following properties:
 @hdr3col{property, type, description}
 @row3col{rows, integer, Number of rows in the grid (default: 0 - determine automatically).}
 @row3col{cols, integer, Number of columns in the grid (default: 0 - determine automatically).}
-@row3col{vgap, integer, Vertical gap between children (default: 0).}
-@row3col{hgap, integer, Horizontal gap between children (default: 0).}
+@row3col{vgap, @ref overview_xrcformat_type_dimension, Vertical gap between children (default: 0).}
+@row3col{hgap, @ref overview_xrcformat_type_dimension, Horizontal gap between children (default: 0).}
 @endTable
 
 @subsection overview_xrcformat_wxflexgridsizer wxFlexGridSizer
@@ -2161,8 +2161,8 @@ class-specific properties. All classes support the following properties:
 @hdr3col{property, type, description}
 @row3col{rows, integer, Number of rows in the grid (default: 0 - determine automatically).}
 @row3col{cols, integer, Number of columns in the grid (default: 0 - determine automatically).}
-@row3col{vgap, integer, Vertical gap between children (default: 0).}
-@row3col{hgap, integer, Horizontal gap between children (default: 0).}
+@row3col{vgap, @ref overview_xrcformat_type_dimension, Vertical gap between children (default: 0).}
+@row3col{hgap, @ref overview_xrcformat_type_dimension, Horizontal gap between children (default: 0).}
 @row3col{flexibledirection, @ref overview_xrcformat_type_style,
     Flexible direction, @c wxVERTICAL, @c wxHORIZONTAL or @c wxBOTH (default).
     This property is only available since wxWidgets 2.9.5.}
@@ -2185,8 +2185,8 @@ class-specific properties. All classes support the following properties:
 
 @beginTable
 @hdr3col{property, type, description}
-@row3col{vgap, integer, Vertical gap between children (default: 0).}
-@row3col{hgap, integer, Horizontal gap between children (default: 0).}
+@row3col{vgap, @ref overview_xrcformat_type_dimension, Vertical gap between children (default: 0).}
+@row3col{hgap, @ref overview_xrcformat_type_dimension, Horizontal gap between children (default: 0).}
 @row3col{flexibledirection, @ref overview_xrcformat_type_style,
     Flexible direction, @c wxVERTICAL, @c wxHORIZONTAL, @c wxBOTH (default: @c wxBOTH).}
 @row3col{nonflexiblegrowmode, @ref overview_xrcformat_type_style,