diff --git a/sys/conf/NOTES b/sys/conf/NOTES
index e8c98245a4a..903f375d87a 100644
--- a/sys/conf/NOTES
+++ b/sys/conf/NOTES
@@ -1108,12 +1108,9 @@ device		atapist		# ATAPI tape drives
 # ATA_ENABLE_ATAPI_DMA:	enable DMA on ATAPI device, since many ATAPI devices
 #			claim to support DMA but doesn't actually work, this
 #			is not enabled as default.
-# ATA_16BIT_ONLY:	for older HW that doesn't support 32bit transfers on
-#			the ATA channels (mostly old ISA boards).
 
 options 	ATA_STATIC_ID
 options 	ATA_ENABLE_ATAPI_DMA
-#options 	ATA_16BIT_ONLY
 
 #
 # For older non-PCI systems, these are the lines to use:
diff --git a/sys/i386/conf/LINT b/sys/i386/conf/LINT
index e8c98245a4a..903f375d87a 100644
--- a/sys/i386/conf/LINT
+++ b/sys/i386/conf/LINT
@@ -1108,12 +1108,9 @@ device		atapist		# ATAPI tape drives
 # ATA_ENABLE_ATAPI_DMA:	enable DMA on ATAPI device, since many ATAPI devices
 #			claim to support DMA but doesn't actually work, this
 #			is not enabled as default.
-# ATA_16BIT_ONLY:	for older HW that doesn't support 32bit transfers on
-#			the ATA channels (mostly old ISA boards).
 
 options 	ATA_STATIC_ID
 options 	ATA_ENABLE_ATAPI_DMA
-#options 	ATA_16BIT_ONLY
 
 #
 # For older non-PCI systems, these are the lines to use:
diff --git a/sys/i386/conf/NOTES b/sys/i386/conf/NOTES
index e8c98245a4a..903f375d87a 100644
--- a/sys/i386/conf/NOTES
+++ b/sys/i386/conf/NOTES
@@ -1108,12 +1108,9 @@ device		atapist		# ATAPI tape drives
 # ATA_ENABLE_ATAPI_DMA:	enable DMA on ATAPI device, since many ATAPI devices
 #			claim to support DMA but doesn't actually work, this
 #			is not enabled as default.
-# ATA_16BIT_ONLY:	for older HW that doesn't support 32bit transfers on
-#			the ATA channels (mostly old ISA boards).
 
 options 	ATA_STATIC_ID
 options 	ATA_ENABLE_ATAPI_DMA
-#options 	ATA_16BIT_ONLY
 
 #
 # For older non-PCI systems, these are the lines to use: