diff --git a/sys/kern/sysv_shm.c b/sys/kern/sysv_shm.c
--- a/sys/kern/sysv_shm.c
+++ b/sys/kern/sysv_shm.c
@@ -109,10 +109,6 @@
 
 static MALLOC_DEFINE(M_SHM, "shm", "SVID compatible shared memory segments");
 
-#define	SHMSEG_FREE     	0x0200
-#define	SHMSEG_REMOVED  	0x0400
-#define	SHMSEG_ALLOCATED	0x0800
-
 static int shm_last_free, shm_nused, shmalloced;
 vm_size_t shm_committed;
 static struct shmid_kernel *shmsegs;
diff --git a/sys/sys/shm.h b/sys/sys/shm.h
--- a/sys/sys/shm.h
+++ b/sys/sys/shm.h
@@ -152,6 +152,10 @@
 
 extern struct shminfo	shminfo;
 
+#define	SHMSEG_FREE     	0x0200
+#define	SHMSEG_REMOVED  	0x0400
+#define	SHMSEG_ALLOCATED	0x0800
+
 void	shmexit(struct vmspace *);
 void	shmfork(struct proc *, struct proc *);