diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index af52bbf63b..35a714d426 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -205,7 +205,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
               "usb-serial", /* 125 */
               "usb-net",
               "add-fd",
-
+              "nbd-server",
     );
 
 struct _virQEMUCaps {
@@ -1940,6 +1940,8 @@ virQEMUCapsProbeQMPCommands(virQEMUCapsPtr qemuCaps,
             virQEMUCapsSet(qemuCaps, QEMU_CAPS_DISK_SNAPSHOT);
         else if (STREQ(name, "add-fd"))
             virQEMUCapsSet(qemuCaps, QEMU_CAPS_ADD_FD);
+        else if (STREQ(name, "nbd-server-start"))
+            virQEMUCapsSet(qemuCaps, QEMU_CAPS_NBD_SERVER);
         VIR_FREE(name);
     }
     VIR_FREE(commands);
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index e69d558e24..7c55dc8cd1 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -166,6 +166,7 @@ enum virQEMUCapsFlags {
     QEMU_CAPS_DEVICE_USB_SERIAL  = 125, /* -device usb-serial */
     QEMU_CAPS_DEVICE_USB_NET     = 126, /* -device usb-net */
     QEMU_CAPS_ADD_FD             = 127, /* -add-fd */
+    QEMU_CAPS_NBD_SERVER         = 128, /* nbd-server-start QMP command */
 
     QEMU_CAPS_LAST,                   /* this must always be the last item */
 };