diff --git a/target/linux/kirkwood/profiles/110-nas.mk b/target/linux/kirkwood/profiles/110-nas.mk
index 185318d9802..07a9797e55b 100644
--- a/target/linux/kirkwood/profiles/110-nas.mk
+++ b/target/linux/kirkwood/profiles/110-nas.mk
@@ -17,7 +17,7 @@ define Profile/DOCKSTAR/Description
  Package set compatible with Seagate FreeAgent Dockstar board.
 endef
 
-DOCKSTAR_UBIFS_OPTS:="-m 2048 -e 126KiB -c 4096 -U"
+DOCKSTAR_UBIFS_OPTS:="-m 2048 -e 126KiB -c 4096"
 DOCKSTAR_UBI_OPTS:="-m 2048 -p 128KiB -s 512"
 
 $(eval $(call Profile,DOCKSTAR))
@@ -49,7 +49,7 @@ define Profile/IB62X0/Description
  Package set compatible with RaidSonic ICY BOX IB-NAS62x0 board.
 endef
 
-IB62X0_UBIFS_OPTS:="-m 2048 -e 126KiB -c 4096 -U"
+IB62X0_UBIFS_OPTS:="-m 2048 -e 126KiB -c 4096"
 IB62X0_UBI_OPTS:="-m 2048 -p 128KiB -s 512"
 
 $(eval $(call Profile,IB62X0))
diff --git a/target/linux/kirkwood/profiles/120-pogoplug.mk b/target/linux/kirkwood/profiles/120-pogoplug.mk
index 0f842494ab1..47672f1114d 100644
--- a/target/linux/kirkwood/profiles/120-pogoplug.mk
+++ b/target/linux/kirkwood/profiles/120-pogoplug.mk
@@ -15,7 +15,7 @@ define Profile/POGOE02/Description
  Package set compatible with Cloud Engines Pogoplug E02 board.
 endef
 
-POGOE02_UBIFS_OPTS:="-m 2048 -e 128KiB -c 4096 -U"
+POGOE02_UBIFS_OPTS:="-m 2048 -e 128KiB -c 4096"
 POGOE02_UBI_OPTS:="-m 2048 -p 128KiB -s 512"
 
 $(eval $(call Profile,POGOE02))