diff --git a/src/gzip_constants.h b/src/gzip_constants.h
index edd092a..0041857 100644
--- a/src/gzip_constants.h
+++ b/src/gzip_constants.h
@@ -28,7 +28,6 @@
 
 #define GZIP_XFL_SLOWEST_COMRESSION	0x02
 #define GZIP_XFL_FASTEST_COMRESSION	0x04
-#define GZIP_XFL_RESERVED		0xF9
 
 #define GZIP_OS_FAT			0
 #define GZIP_OS_AMIGA			1
diff --git a/src/gzip_decompress.c b/src/gzip_decompress.c
index 55fd6ed..6b03f70 100644
--- a/src/gzip_decompress.c
+++ b/src/gzip_decompress.c
@@ -34,8 +34,7 @@ gzip_decompress(struct deflate_decompressor *d,
 	/* MTIME */
 	in_next += 4;
 	/* XFL */
-	if (*in_next++ & GZIP_XFL_RESERVED)
-		return false;
+	in_next += 1;
 	/* OS */
 	in_next += 1;