diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 0efac66f61..4e3cd5c8cf 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -87,6 +87,7 @@ VIR_ENUM_IMPL(virDomainTaint,
               "custom-hypervisor-feature",
               "deprecated-config",
               "custom-device",
+              "nbdkit-restart",
 );
 
 VIR_ENUM_IMPL(virDomainTaintMessage,
@@ -105,6 +106,7 @@ VIR_ENUM_IMPL(virDomainTaintMessage,
               N_("hypervisor feature autodetection override"),
               N_("use of deprecated configuration settings"),
               N_("custom device configuration"),
+              N_("nbdkit restart failed"),
 );
 
 VIR_ENUM_IMPL(virDomainVirt,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 77e5b26957..16289789c2 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -3194,6 +3194,7 @@ typedef enum {
     VIR_DOMAIN_TAINT_CUSTOM_HYPERVISOR_FEATURE, /* custom hypervisor feature control */
     VIR_DOMAIN_TAINT_DEPRECATED_CONFIG,  /* Configuration that is marked deprecated */
     VIR_DOMAIN_TAINT_CUSTOM_DEVICE, /* hypervisor device config customized */
+    VIR_DOMAIN_TAINT_NBDKIT_RESTART,    /* nbdkit could not be restarted */
 
     VIR_DOMAIN_TAINT_LAST
 } virDomainTaintFlags;