diff --git a/tests/data/cli/compare/virt-install-many-devices.xml b/tests/data/cli/compare/virt-install-many-devices.xml
index f70034c41..11673d5b5 100644
--- a/tests/data/cli/compare/virt-install-many-devices.xml
+++ b/tests/data/cli/compare/virt-install-many-devices.xml
@@ -146,6 +146,7 @@
       <reset state="on"/>
       <frequencies state="on"/>
       <reenlightenment state="on"/>
+      <tlbflush state="on"/>
     </hyperv>
     <vmport state="off"/>
     <kvm>
diff --git a/tests/test_cli.py b/tests/test_cli.py
index 17db14cc4..6fe44d89e 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -574,7 +574,8 @@ hyperv.stimer.state=on,\
 hyperv.stimer.direct.state=on,\
 hyperv.reset.state=off,hyperv_reset=on,\
 hyperv.frequencies.state=on,\
-hyperv.reenlightenment.state=on
+hyperv.reenlightenment.state=on,\
+hyperv.tlbflush.state=on
 
 
 --clock offset=utc,hpet_present=no,rtc_tickpolicy=merge,timer2.name=hypervclock,timer3.name=pit,timer1.present=yes,timer3.tickpolicy=delay,timer2.present=no,timer4.name=rtc,timer5.name=tsc,timer6.name=tsc,timer4.track=wall,timer5.frequency=10,timer6.mode=emulate,timer7.name=rtc,timer7.tickpolicy=catchup,timer7.catchup.threshold=123,timer7.catchup.slew=120,timer7.catchup.limit=10000,rtc_present=no,pit_present=yes,pit_tickpolicy=catchup,tsc_present=no,platform_present=no,hypervclock_present=no,platform_tickpolicy=foo,hpet_tickpolicy=bar,tsc_tickpolicy=wibble,kvmclock_tickpolicy=wobble,hypervclock_tickpolicy=woo
diff --git a/virtinst/cli.py b/virtinst/cli.py
index 970151f4d..8fc1ae2b6 100644
--- a/virtinst/cli.py
+++ b/virtinst/cli.py
@@ -3018,6 +3018,7 @@ class ParserFeatures(VirtCLIParser):
         cls.add_arg("hyperv.reset.state", "hyperv_reset", is_onoff=True)
         cls.add_arg("hyperv.frequencies.state", "hyperv_frequencies", is_onoff=True)
         cls.add_arg("hyperv.reenlightenment.state", "hyperv_reenlightenment", is_onoff=True)
+        cls.add_arg("hyperv.tlbflush.state", "hyperv_tlbflush", is_onoff=True)
 
         cls.add_arg("vmport.state", "vmport", is_onoff=True)
         cls.add_arg("kvm.hidden.state", "kvm_hidden", is_onoff=True)
diff --git a/virtinst/domain/features.py b/virtinst/domain/features.py
index 88167af04..c9cf49c70 100644
--- a/virtinst/domain/features.py
+++ b/virtinst/domain/features.py
@@ -39,6 +39,7 @@ class DomainFeatures(XMLBuilder):
     hyperv_reset = XMLProperty("./hyperv/reset/@state", is_onoff=True)
     hyperv_frequencies = XMLProperty("./hyperv/frequencies/@state", is_onoff=True)
     hyperv_reenlightenment = XMLProperty("./hyperv/reenlightenment/@state", is_onoff=True)
+    hyperv_tlbflush = XMLProperty("./hyperv/tlbflush/@state", is_onoff=True)
 
     vmport = XMLProperty("./vmport/@state", is_onoff=True)
     kvm_hidden = XMLProperty("./kvm/hidden/@state", is_onoff=True)