diff --git a/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb b/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb
index 4440376..a7c1b9e 100644
--- a/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb
+++ b/common/haswell_shared/hw-gfx-gma-connectors-ddi.adb
@@ -507,10 +507,16 @@
             Port_Cfg.Display = HDMI and then
             Port_Cfg.Port in DDI_Phy.DDI_Phy_Port
          then
-            DDI_Phy.Set_HDMI_Signal_Levels
-              (Port  => Port_Cfg.Port,
-               Level => DDI_Phy.HDMI_Buf_Trans_Range'Last);
-            Success := True;
+            declare
+               HDMI_Level : constant DDI_Phy.HDMI_Buf_Trans_Range :=
+                 (if Config.DDI_HDMI_Buffer_Translation
+                     in DDI_Phy.HDMI_Buf_Trans_Range
+                  then Config.DDI_HDMI_Buffer_Translation
+                  else Config.Default_DDI_HDMI_Buffer_Translation);
+            begin
+               DDI_Phy.Set_HDMI_Signal_Levels (Port_Cfg.Port, HDMI_Level);
+               Success := True;
+            end;
          else
             Success := True;
          end if;
diff --git a/common/haswell_shared/hw-gfx-gma-ddi_phy_stub.ads b/common/haswell_shared/hw-gfx-gma-ddi_phy_stub.ads
index b37e955..6099c50 100644
--- a/common/haswell_shared/hw-gfx-gma-ddi_phy_stub.ads
+++ b/common/haswell_shared/hw-gfx-gma-ddi_phy_stub.ads
@@ -27,7 +27,7 @@
      (Port        : Digital_Port;
       Train_Set   : DP_Info.Train_Set) is null;
 
-   type HDMI_Buf_Trans_Range is range 0 .. 9;
+   subtype HDMI_Buf_Trans_Range is DDI_HDMI_Buf_Trans_Range;
    procedure Set_HDMI_Signal_Levels
      (Port  : DDI_Phy_Port;
       Level : HDMI_Buf_Trans_Range) is null;