diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 9edb4ca4d461e00ac7c7bc0f3be96b863585609d..8a44d32c5955a00a00257c0a5db375367e80c9fc 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -507,6 +507,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
 
               /* 315 */
               "vfio-pci.display",
+              "blockdev",
     );
 
 
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 26813a908cf12d23ec3c6c9f1ec7a69e5b670e83..ece5771cc20157697c8ccb1cb46f94c726ba3c04 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -491,6 +491,7 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
 
     /* 315 */
     QEMU_CAPS_VFIO_PCI_DISPLAY, /* -device vfio-pci.display */
+    QEMU_CAPS_BLOCKDEV, /* -blockdev and blockdev-add are supported */
 
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;