diff --git a/common/hw-gfx-gma.ads b/common/hw-gfx-gma.ads
index b6c491f..5c63942 100644
--- a/common/hw-gfx-gma.ads
+++ b/common/hw-gfx-gma.ads
@@ -54,7 +54,8 @@
       Ibex_Peak,
       Cougar_Point,     -- Panther Point compatible
       Lynx_Point,       -- Wildcat Point compatible
-      Sunrise_Point);   -- Union Point compatible
+      Sunrise_Point,    -- Union Point compatible
+      Cannon_Point);
 
    type Port_Type is
      (Disabled,