diff --git a/common/hw-gfx-gma-connectors.ads b/common/hw-gfx-gma-connectors.ads
index 134b076..a1d0d1e 100644
--- a/common/hw-gfx-gma-connectors.ads
+++ b/common/hw-gfx-gma-connectors.ads
@@ -29,7 +29,8 @@
       Success     :    out Boolean);
 
    procedure Post_On
-     (Port_Cfg : in     Port_Config;
+     (Pipe     : in     Pipe_Index;
+      Port_Cfg : in     Port_Config;
       PLL_Hint : in     Word32;
       Success  :    out Boolean);
    pragma Warnings (GNATprove, On, "unused variable ""P*""");