diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 68579a0..639a32c 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -580,7 +580,7 @@
 			return 0;
 		}
 		if (le32_to_cpu(gdp->bg_inode_table) < first_block ||
-		    le32_to_cpu(gdp->bg_inode_table) + sbi->s_itb_per_group >
+		    le32_to_cpu(gdp->bg_inode_table) + sbi->s_itb_per_group - 1 >
 		    last_block)
 		{
 			ext2_error (sb, "ext2_check_descriptors",