diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index 1fbfd6450a31..2207fc61665d 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -458,10 +458,11 @@
 #define __NR_syncfs			500
 #define __NR_setns			501
 #define __NR_accept4			502
+#define __NR_sendmmsg			503
 
 #ifdef __KERNEL__
 
-#define NR_SYSCALLS			503
+#define NR_SYSCALLS			504
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 53d0ce2d304c..e534e1c5bc11 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -521,6 +521,7 @@ sys_call_table:
 	.quad sys_syncfs			/* 500 */
 	.quad sys_setns
 	.quad sys_accept4
+	.quad sys_sendmmsg
 
 	.size sys_call_table, . - sys_call_table
 	.type sys_call_table, @object