diff --git a/conf/machine/k2e-evm.conf b/conf/machine/k2e-evm.conf
index e9f500f1..662f5c89 100644
--- a/conf/machine/k2e-evm.conf
+++ b/conf/machine/k2e-evm.conf
@@ -22,7 +22,7 @@ SYSVINIT_ENABLED_GETTYS = ""
 # UBI: logical eraseblock size:    126976 bytes
 # from ubiattach stdout:
 # UBI device number 0, total 3856 LEBs
-MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 4000"
+MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 3856"
 
 # do ubiattach /dev/ubi_ctrl -m 4
 # from dmesg:
diff --git a/conf/machine/k2g-evm.conf b/conf/machine/k2g-evm.conf
index a8ddc667..7681a752 100644
--- a/conf/machine/k2g-evm.conf
+++ b/conf/machine/k2g-evm.conf
@@ -25,7 +25,7 @@ SYSVINIT_ENABLED_GETTYS = ""
 # UBI: logical eraseblock size:    253952 bytes
 # from ubiattach stdout:
 # UBI device number 0, total 1926 LEBs
-MKUBIFS_ARGS = "-F -m 4096 -e 253952 -c 2000"
+MKUBIFS_ARGS = "-F -m 4096 -e 253952 -c 1926"
 
 # do ubiattach /dev/ubi_ctrl -m 4
 # from dmesg:
diff --git a/conf/machine/k2hk-evm.conf b/conf/machine/k2hk-evm.conf
index de79de9a..89386f1d 100644
--- a/conf/machine/k2hk-evm.conf
+++ b/conf/machine/k2hk-evm.conf
@@ -22,7 +22,7 @@ SYSVINIT_ENABLED_GETTYS = ""
 # UBI: logical eraseblock size:    126976 bytes
 # from ubiattach stdout:
 # UBI device number 0, total 3856 LEBs
-MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 4000"
+MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 3856"
 
 # do ubiattach /dev/ubi_ctrl -m 4
 # from dmesg:
diff --git a/conf/machine/k2l-evm.conf b/conf/machine/k2l-evm.conf
index e326ba24..dddc01f1 100644
--- a/conf/machine/k2l-evm.conf
+++ b/conf/machine/k2l-evm.conf
@@ -22,7 +22,7 @@ SYSVINIT_ENABLED_GETTYS = ""
 # UBI: logical eraseblock size:    253952 bytes
 # from ubiattach stdout:
 # UBI device number 0, total 1926 LEBs
-MKUBIFS_ARGS = "-F -m 4096 -e 253952 -c 2000"
+MKUBIFS_ARGS = "-F -m 4096 -e 253952 -c 1926"
 
 # do ubiattach /dev/ubi_ctrl -m 4
 # from dmesg: