diff --git a/src/mainboard/asrock/b75pro3-m/gma-mainboard.ads b/src/mainboard/asrock/b75pro3-m/gma-mainboard.ads
index 504d3b4..e973817 100644
--- a/src/mainboard/asrock/b75pro3-m/gma-mainboard.ads
+++ b/src/mainboard/asrock/b75pro3-m/gma-mainboard.ads
@@ -21,8 +21,8 @@
 private package GMA.Mainboard is
 
    ports : constant Port_List :=
-     (HDMI1,
-      HDMI2,
+     (HDMI1, -- mainboard DVI port
+      HDMI3, -- mainboard HDMI port
       Analog,
       others => Disabled);