diff --git a/src/northbridge/intel/i945/acpi/igd.asl b/src/northbridge/intel/i945/acpi/igd.asl
index 47b66a7..f9c8ef4 100644
--- a/src/northbridge/intel/i945/acpi/igd.asl
+++ b/src/northbridge/intel/i945/acpi/igd.asl
@@ -216,14 +216,14 @@ Device (GFX0)
 
 		Method (_BCM, 1, NotSerialized)
 		{
-			Store (ShiftLeft (Arg0, 4), ^^BCLV)
+			Store (ShiftLeft (Arg0, 9), ^^BCLV)
 			Store (0x80000000, ^^CR1)
-			Store (ShiftLeft (0x61, 4), ^^BCLM)
+			Store (ShiftLeft (0x61, 9), ^^BCLM)
 		}
 		Method (_BQC, 0, NotSerialized)
 		{
 			Store (^^BCLV, Local0)
-			ShiftRight (Local0, 4, Local0)
+			ShiftRight (Local0, 9, Local0)
 			Return (Local0)
 		}