diff --git a/sysdeps/unix/sysv/linux/alpha/bits/shm.h b/sysdeps/unix/sysv/linux/alpha/bits/shm.h
index bbee434ea0..35226c16ce 100644
--- a/sysdeps/unix/sysv/linux/alpha/bits/shm.h
+++ b/sysdeps/unix/sysv/linux/alpha/bits/shm.h
@@ -71,6 +71,7 @@ struct shmid_ds
 # define SHM_DEST	01000	/* segment will be destroyed on last detach */
 # define SHM_LOCKED	02000   /* segment will not be swapped */
 # define SHM_HUGETLB	04000	/* segment is mapped via hugetlb */
+# define SHM_NORESERVE	010000	/* don't check for reservations */
 
 struct	shminfo
   {
diff --git a/sysdeps/unix/sysv/linux/hppa/bits/shm.h b/sysdeps/unix/sysv/linux/hppa/bits/shm.h
index 1c022fda83..a91f1f575b 100644
--- a/sysdeps/unix/sysv/linux/hppa/bits/shm.h
+++ b/sysdeps/unix/sysv/linux/hppa/bits/shm.h
@@ -79,6 +79,7 @@ struct shmid_ds
 # define SHM_DEST	01000	/* segment will be destroyed on last detach */
 # define SHM_LOCKED	02000   /* segment will not be swapped */
 # define SHM_HUGETLB	04000	/* segment is mapped via hugetlb */
+# define SHM_NORESERVE	010000	/* don't check for reservations */
 
 struct	shminfo
   {