diff --git a/conf/machine/am57xx-evm.conf b/conf/machine/am57xx-evm.conf
index c923174a..95d3fc7c 100644
--- a/conf/machine/am57xx-evm.conf
+++ b/conf/machine/am57xx-evm.conf
@@ -23,7 +23,7 @@ UBOOT_MACHINE = "beagle_x15_config"
 # UBI: logical eraseblock size:    126976 bytes
 # from ubiattach stdout:
 # UBI device number 0, total 1988 LEBs
-MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 5120"
+MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 6400"
 
 # do ubiattach /dev/ubi_ctrl -m 7 -O 2048
 # from dmesg:
diff --git a/conf/machine/dra7xx-evm.conf b/conf/machine/dra7xx-evm.conf
index 3b886688..9bfcb5c9 100644
--- a/conf/machine/dra7xx-evm.conf
+++ b/conf/machine/dra7xx-evm.conf
@@ -23,7 +23,7 @@ UBOOT_MACHINE = "dra7xx_evm_config"
 # UBI: logical eraseblock size:    126976 bytes
 # from ubiattach stdout:
 # UBI device number 0, total 1988 LEBs
-MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 5120"
+MKUBIFS_ARGS = "-F -m 2048 -e 126976 -c 6400"
 
 # do ubiattach /dev/ubi_ctrl -m 7 -O 2048
 # from dmesg: