diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
index 2b87fcc..9f1b935 100644
--- a/fs/jffs2/compr_zlib.c
+++ b/fs/jffs2/compr_zlib.c
@@ -16,7 +16,6 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/zlib.h>
-#include <linux/zutil.h>
 #include "nodelist.h"
 #include "compr.h"
 
@@ -154,7 +153,7 @@ static int jffs2_zlib_decompress(unsigned char *data_in,
 
 	/* If it's deflate, and it's got no preset dictionary, then
 	   we can tell zlib to skip the adler32 check. */
-	if (srclen > 2 && !(data_in[1] & PRESET_DICT) &&
+	if (srclen > 2 && !(data_in[1] & 0x20) &&
 	    ((data_in[0] & 0x0f) == Z_DEFLATED) &&
 	    !(((data_in[0]<<8) + data_in[1]) % 31)) {