diff --git a/common/cmd_ext4.c b/common/cmd_ext4.c
index 8289d25..68b047b 100644
--- a/common/cmd_ext4.c
+++ b/common/cmd_ext4.c
@@ -79,8 +79,8 @@
 	/* get the address in hexadecimal format (string to int) */
 	ram_address = simple_strtoul(argv[3], NULL, 16);
 
-	/* get the filesize in base 10 format */
-	file_size = simple_strtoul(argv[5], NULL, 10);
+	/* get the filesize in hexadecimal format */
+	file_size = simple_strtoul(argv[5], NULL, 16);
 
 	/* set the device as block device */
 	ext4fs_set_blk_dev(dev_desc, &info);