diff --git a/sys/mips/include/param.h b/sys/mips/include/param.h
index 5f25c81c98f..608d80288d0 100644
--- a/sys/mips/include/param.h
+++ b/sys/mips/include/param.h
@@ -149,7 +149,6 @@
 
 #define	MAXPAGESIZES		1		/* max supported pagesizes */
 
-#define	BLKDEV_IOSIZE		2048		/* xxx: Why is this 1/2 page? */
 #define	MAXDUMPPGS		1		/* xxx: why is this only one? */
 
 /*