diff --git a/e2fsck/journal.c b/e2fsck/journal.c
index 155857d9..64a0fd62 100644
--- a/e2fsck/journal.c
+++ b/e2fsck/journal.c
@@ -214,7 +214,7 @@ static int process_journal_block(ext2_filsys fs,
 
 	p = (struct process_block_struct *) priv_data;
 
-	if (blk < fs->super->s_first_data_block ||
+	if (!blk || blk < fs->super->s_first_data_block ||
 	    blk >= fs->super->s_blocks_count)
 		return BLOCK_ABORT;