diff --git a/libc/kernel/uapi/linux/shm.h b/libc/kernel/uapi/linux/shm.h
index a3071e7..a30a089 100644
--- a/libc/kernel/uapi/linux/shm.h
+++ b/libc/kernel/uapi/linux/shm.h
@@ -65,6 +65,7 @@
 #define SHM_UNLOCK 12
 #define SHM_STAT 13
 #define SHM_INFO 14
+#define SHM_STAT_ANY 15
 struct shminfo {
   int shmmax;
   int shmmin;