diff --git a/hw/xfree86/man/xorg.conf.man b/hw/xfree86/man/xorg.conf.man
index d057f26ec..3669e6d1f 100644
--- a/hw/xfree86/man/xorg.conf.man
+++ b/hw/xfree86/man/xorg.conf.man
@@ -2096,6 +2096,14 @@ use for the screen. This may be used to select an alternate implementation
 for development, debugging, or alternate feature sets.
 Default: mesa.
 .TP 7
+.BI "Option \*RenderingAPI\*q \*q" string \*q
+This option specifies an rendering API for use in conjunction with Glamor
+accel method. You can specify OpenGL with a value "gl" and OpenGL ES with a 
+value "es", and the default is both, when Glamor fallbacks to GLES if GL 2.1 is
+not available. This may be useful for embedded and old cards, where GL ES
+feature set works faster than GL feature set.
+Default: gl.
+.TP 7
 .BI "Option \*qInitPrimary\*q \*q" boolean \*q
 Use the Int10 module to initialize the primary graphics card.
 Normally, only secondary cards are soft-booted using the Int10 module, as the