diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index ef83457fd4ead1f90885659f9c7ca8c1301a2790..a1ac24b6a758a1dfc9690ba297d75a18aebb3af1 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1771,7 +1771,7 @@ static int parse_options(char *options, struct super_block *sb,
 				return 0;
 			if (option < 0 || option > (1 << 30))
 				return 0;
-			if (!is_power_of_2(option)) {
+			if (option && !is_power_of_2(option)) {
 				ext4_msg(sb, KERN_ERR,
 					 "EXT4-fs: inode_readahead_blks"
 					 " must be a power of 2");
@@ -2412,7 +2412,7 @@ static ssize_t inode_readahead_blks_store(struct ext4_attr *a,
 	if (parse_strtoul(buf, 0x40000000, &t))
 		return -EINVAL;
 
-	if (!is_power_of_2(t))
+	if (t && !is_power_of_2(t))
 		return -EINVAL;
 
 	sbi->s_inode_readahead_blks = t;