diff --git a/mk_mmc.sh b/mk_mmc.sh
index 7ee946c..ab52ae8 100755
--- a/mk_mmc.sh
+++ b/mk_mmc.sh
@@ -1608,10 +1608,6 @@ function check_uboot_type {
 
 		USE_KMS=1
 		unset HAS_OMAPFB_DSS2
-		unset VIDEO_DRV
-		unset VIDEO_OMAP_RAM
-		unset VIDEO_OMAPFB_MODE
-		unset VIDEO_TIMING
 
 		BETA_KERNEL=1
 		;;
@@ -1689,10 +1685,6 @@ function check_uboot_type {
 
 		USE_KMS=1
 		unset HAS_OMAPFB_DSS2
-		unset VIDEO_DRV
-		unset VIDEO_OMAP_RAM
-		unset VIDEO_OMAPFB_MODE
-		unset VIDEO_TIMING
 		KMS_VIDEOB="video=HDMI-A-1"
 
 		BETA_KERNEL=1