diff --git a/drivers/s390/block/dasd_eckd.h b/drivers/s390/block/dasd_eckd.h
index f9299bd184ba..763733bcc4d2 100644
--- a/drivers/s390/block/dasd_eckd.h
+++ b/drivers/s390/block/dasd_eckd.h
@@ -131,7 +131,7 @@
 /*
  * Maximum number of blocks to be chained
  */
-#define DASD_ECKD_MAX_BLOCKS		 190
+#define DASD_ECKD_MAX_BLOCKS		 180
 #define DASD_ECKD_MAX_BLOCKS_RAW	 256
 
 /*****************************************************************************