diff --git a/doc/public/tmpl/cairo-image.sgml b/doc/public/tmpl/cairo-image.sgml
index 8e8dc86e1..345d49979 100644
--- a/doc/public/tmpl/cairo-image.sgml
+++ b/doc/public/tmpl/cairo-image.sgml
@@ -29,4 +29,5 @@ Rendering to memory buffers
 @CAIRO_FORMAT_RGB24: 
 @CAIRO_FORMAT_A8: 
 @CAIRO_FORMAT_A1: 
+@CAIRO_FORMAT_RGB16_565: