diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 23f6d3feb5..55ad47186d 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -69,6 +69,15 @@
      IOCTL(KDSETLED, 0, TYPE_INT)
      IOCTL_SPECIAL(KDSIGACCEPT, 0, do_ioctl_kdsigaccept, TYPE_INT)
 
+     IOCTL(RTC_AIE_ON, 0, TYPE_NULL)
+     IOCTL(RTC_AIE_OFF, 0, TYPE_NULL)
+     IOCTL(RTC_UIE_ON, 0, TYPE_NULL)
+     IOCTL(RTC_UIE_OFF, 0, TYPE_NULL)
+     IOCTL(RTC_PIE_ON, 0, TYPE_NULL)
+     IOCTL(RTC_PIE_OFF, 0, TYPE_NULL)
+     IOCTL(RTC_WIE_ON, 0, TYPE_NULL)
+     IOCTL(RTC_WIE_OFF, 0, TYPE_NULL)
+
      IOCTL(BLKROSET, IOC_W, MK_PTR(TYPE_INT))
      IOCTL(BLKROGET, IOC_R, MK_PTR(TYPE_INT))
      IOCTL(BLKRRPART, 0, TYPE_NULL)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index bd2436b310..d60142f069 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -110,6 +110,7 @@
 #include <netpacket/packet.h>
 #include <linux/netlink.h>
 #include <linux/if_alg.h>
+#include <linux/rtc.h>
 #include "linux_loop.h"
 #include "uname.h"
 
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index fb8318d121..fc3d79ab97 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -763,6 +763,16 @@ struct target_pollfd {
 #define TARGET_KDSETLED        0x4B32	/* set led state [lights, not flags] */
 #define TARGET_KDSIGACCEPT     0x4B4E
 
+/* real time clock ioctls */
+#define TARGET_RTC_AIE_ON           TARGET_IO('p', 0x01)
+#define TARGET_RTC_AIE_OFF          TARGET_IO('p', 0x02)
+#define TARGET_RTC_UIE_ON           TARGET_IO('p', 0x03)
+#define TARGET_RTC_UIE_OFF          TARGET_IO('p', 0x04)
+#define TARGET_RTC_PIE_ON           TARGET_IO('p', 0x05)
+#define TARGET_RTC_PIE_OFF          TARGET_IO('p', 0x06)
+#define TARGET_RTC_WIE_ON           TARGET_IO('p', 0x0f)
+#define TARGET_RTC_WIE_OFF          TARGET_IO('p', 0x10)
+
 #if defined(TARGET_ALPHA) || defined(TARGET_MIPS) || defined(TARGET_SH4) ||    \
        defined(TARGET_XTENSA)
 #define TARGET_FIOGETOWN       TARGET_IOR('f', 123, int)