diff --git a/sys/powerpc/include/vmparam.h b/sys/powerpc/include/vmparam.h
index e9a2ce23b0a..ad8c67d0380 100644
--- a/sys/powerpc/include/vmparam.h
+++ b/sys/powerpc/include/vmparam.h
@@ -57,13 +57,6 @@
 #define	MAXSSIZ		(64*1024*1024)		/* max stack size */
 #endif
 
-/*
- * Size of shared memory map
- */
-#ifndef	SHMMAXPGS
-#define	SHMMAXPGS	1024
-#endif
-
 /*
  * The time for a process to be blocked before being very swappable.
  * This is a number of seconds which the system takes as being a non-trivial