diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index a7eec98..e72401e 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -2766,7 +2766,7 @@
 	int old_ref = 0;
 
  	inode = mapping->host;
-	*fsdata = 0;
+	*fsdata = NULL;
  	if (flags & AOP_FLAG_CONT_EXPAND &&
  	    (pos & (inode->i_sb->s_blocksize - 1)) == 0) {
  		pos ++;