diff --git a/config/Config-images.in b/config/Config-images.in
index 2aec45bc48..167fcc5665 100644
--- a/config/Config-images.in
+++ b/config/Config-images.in
@@ -280,14 +280,14 @@ menu "Target Images"
 	source "target/linux/*/image/Config.in"
 
 	config TARGET_KERNEL_PARTSIZE
-		int "Kernel partition size (in MB)"
+		int "Kernel partition size (in MiB)"
 		depends on USES_BOOT_PART
 		default 8 if TARGET_apm821xx_sata
 		default 64 if TARGET_bcm27xx
 		default 16
 
 	config TARGET_ROOTFS_PARTSIZE
-		int "Root filesystem partition size (in MB)"
+		int "Root filesystem partition size (in MiB)"
 		depends on USES_ROOTFS_PART || TARGET_ROOTFS_EXT4FS || TARGET_mvebu || TARGET_rb532 || TARGET_sunxi || TARGET_uml
 		default 160
 		help