diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index fc9615f9ea..9667555c01 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -107,7 +107,8 @@ VIR_ENUM_IMPL(virDomainTaint, VIR_DOMAIN_TAINT_LAST,
               "shell-scripts",
               "disk-probing",
               "external-launch",
-              "host-cpu");
+              "host-cpu",
+              "hook-script");
 
 VIR_ENUM_IMPL(virDomainVirt, VIR_DOMAIN_VIRT_LAST,
               "qemu",
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 24cbec3374..22a927ee7c 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2114,6 +2114,7 @@ enum virDomainTaintFlags {
     VIR_DOMAIN_TAINT_DISK_PROBING,     /* Relying on potentially unsafe disk format probing */
     VIR_DOMAIN_TAINT_EXTERNAL_LAUNCH,  /* Externally launched guest domain */
     VIR_DOMAIN_TAINT_HOST_CPU,         /* Host CPU passthrough in use */
+    VIR_DOMAIN_TAINT_HOOK,             /* Domain (possibly) changed via hook script */
 
     VIR_DOMAIN_TAINT_LAST
 };