diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index ad641ed67bc188ee3a5253249305e906471bda52..006e04effcdc858f00d8d8d06a99f9363154b76a 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -102,7 +102,8 @@ VIR_ENUM_IMPL(virDomainTaint, VIR_DOMAIN_TAINT_LAST,
               "external-launch",
               "host-cpu",
               "hook-script",
-              "cdrom-passthrough");
+              "cdrom-passthrough",
+              "custom-dtb");
 
 VIR_ENUM_IMPL(virDomainVirt, VIR_DOMAIN_VIRT_LAST,
               "qemu",
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index aeba5a50a639e5d8a1a2d97a9a2fa321e8c0abb5..2bdbff1e140bf49a3c337640341b3675b078672e 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2305,6 +2305,7 @@ typedef enum {
     VIR_DOMAIN_TAINT_HOST_CPU,         /* Host CPU passthrough in use */
     VIR_DOMAIN_TAINT_HOOK,             /* Domain (possibly) changed via hook script */
     VIR_DOMAIN_TAINT_CDROM_PASSTHROUGH,/* CDROM passthrough */
+    VIR_DOMAIN_TAINT_CUSTOM_DTB,       /* Custom device tree blob was specifed */
 
     VIR_DOMAIN_TAINT_LAST
 } virDomainTaintFlags;
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 404489c9c97c20700a1ba12d84102a399f7d44e9..f9bf32c61d805932121aff3ee4b84b2f37730bf2 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -2117,6 +2117,9 @@ void qemuDomainObjCheckTaint(virQEMUDriverPtr driver,
     for (i = 0; i < obj->def->nnets; i++)
         qemuDomainObjCheckNetTaint(driver, obj, obj->def->nets[i], logFD);
 
+    if (obj->def->os.dtb)
+        qemuDomainObjTaint(driver, obj, VIR_DOMAIN_TAINT_CUSTOM_DTB, logFD);
+
     virObjectUnref(cfg);
 }