diff --git a/common/haswell/hw-gfx-gma-spll.ads b/common/haswell/hw-gfx-gma-spll.ads
index 60222ed..bd1402c 100644
--- a/common/haswell/hw-gfx-gma-spll.ads
+++ b/common/haswell/hw-gfx-gma-spll.ads
@@ -12,7 +12,7 @@
 -- GNU General Public License for more details.
 --
 
-package HW.GFX.GMA.SPLL is
+private package HW.GFX.GMA.SPLL is
 
    procedure On;