diff --git a/target/linux/at91/config-default b/target/linux/at91/config-default
index c511dbdb0225901593b9869d46d3bedb1959e912..6ed83c8e74cb31c739997eb2999bd3bd5b35666a 100644
--- a/target/linux/at91/config-default
+++ b/target/linux/at91/config-default
@@ -26,7 +26,6 @@ CONFIG_AT91_SAM9_TIME=y
 CONFIG_AT91_TIMER_HZ=100
 CONFIG_ATAGS=y
 # CONFIG_ATMEL_TCLIB is not set
-# CONFIG_BLK_DEV is not set
 # CONFIG_BLK_DEV_INITRD is not set
 # CONFIG_CACHE_L2X0 is not set
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
diff --git a/target/linux/mcs814x/config-default b/target/linux/mcs814x/config-default
index ce406e3642328e85d64572d35d0a45ef2f1e7a31..85ff2be2a9b1772515a92ecbe7d3050c375f08d5 100644
--- a/target/linux/mcs814x/config-default
+++ b/target/linux/mcs814x/config-default
@@ -18,7 +18,6 @@ CONFIG_ARM_NR_BANKS=8
 # CONFIG_ARPD is not set
 CONFIG_BCMA_POSSIBLE=y
 CONFIG_BINFMT_MISC=y
-# CONFIG_BLK_DEV is not set
 # CONFIG_BRIDGE is not set
 # CONFIG_CACHE_L2X0 is not set
 CONFIG_CC_OPTIMIZE_FOR_SIZE=y
diff --git a/target/linux/x86/olpc/config-3.10 b/target/linux/x86/olpc/config-3.10
index c46f178cc1439b2d49d47761a072a22dadf91f7f..7ad86c000083c3ef1723d9095dcd795be2d4e129 100644
--- a/target/linux/x86/olpc/config-3.10
+++ b/target/linux/x86/olpc/config-3.10
@@ -4,7 +4,6 @@ CONFIG_BACKLIGHT_GENERIC=y
 CONFIG_BACKLIGHT_LCD_SUPPORT=y
 # CONFIG_BACKLIGHT_SAHARA is not set
 CONFIG_BATTERY_OLPC=y
-# CONFIG_BLK_DEV is not set
 CONFIG_BLK_DEV_SR=y
 CONFIG_BLK_DEV_SR_VENDOR=y
 # CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set