diff --git a/sys/alpha/include/param.h b/sys/alpha/include/param.h
index 742a3f793b8b..a8457375100d 100644
--- a/sys/alpha/include/param.h
+++ b/sys/alpha/include/param.h
@@ -133,13 +133,6 @@
 #define	MCLBYTES	(1 << MCLSHIFT)	/* size of a m_buf cluster */
 #define	MCLOFSET	(MCLBYTES - 1)
 
-/*
- * Size of kernel malloc arena in CLBYTES-sized logical pages
- */ 
-#ifndef NKMEMCLUSTERS
-#define	NKMEMCLUSTERS	(4096*1024/CLBYTES)	/* XXX? */
-#endif
-
 /* pages ("clicks") to disk blocks */
 #define	ctod(x)		((x) << (PAGE_SHIFT - DEV_BSHIFT))
 #define	dtoc(x)		((x) >> (PAGE_SHIFT - DEV_BSHIFT))
diff --git a/sys/sys/param.h b/sys/sys/param.h
index 7ac0290e6e59..76edc7485705 100644
--- a/sys/sys/param.h
+++ b/sys/sys/param.h
@@ -131,15 +131,6 @@
 #define	NODEV	(dev_t)(-1)	/* non-existent device */
 #endif
 
-/*
- * Clustering of hardware pages on machines with ridiculously small
- * page sizes is done here.  The paging subsystem deals with units of
- * CLSIZE pte's describing PAGE_SIZE (from machine/machparam.h) pages each.
- */
-#if 0
-#define	CLBYTES		(CLSIZE*PAGE_SIZE)
-#endif
-
 #define	CBLOCK	128		/* Clist block size, must be a power of 2. */
 #define CBQSIZE	(CBLOCK/NBBY)	/* Quote bytes/cblock - can do better. */
 				/* Data chars/clist. */