diff --git a/nova/compute/manager.py b/nova/compute/manager.py
index 4a690bdd47b0..2c07e9630f42 100644
--- a/nova/compute/manager.py
+++ b/nova/compute/manager.py
@@ -4066,7 +4066,7 @@ class ComputeManager(manager.Manager):
     @wrap_exception()
     def get_host_uptime(self, context):
         """Returns the result of calling "uptime" on the target host."""
-        return self.driver.get_host_uptime(self.host)
+        return self.driver.get_host_uptime()
 
     @object_compat
     @wrap_exception()
diff --git a/nova/tests/unit/virt/test_virt_drivers.py b/nova/tests/unit/virt/test_virt_drivers.py
index 998ecf2cbb72..54bacc9fd6e4 100644
--- a/nova/tests/unit/virt/test_virt_drivers.py
+++ b/nova/tests/unit/virt/test_virt_drivers.py
@@ -664,7 +664,7 @@ class _VirtDriverTestCase(_FakeDriverBackendTestCase):
 
     @catch_notimplementederror
     def test_get_host_uptime(self):
-        self.connection.get_host_uptime('a useless argument?')
+        self.connection.get_host_uptime()
 
     @catch_notimplementederror
     def test_host_power_action_reboot(self):
diff --git a/nova/tests/unit/virt/vmwareapi/test_driver_api.py b/nova/tests/unit/virt/vmwareapi/test_driver_api.py
index 2332660ab5d8..8a17355b4127 100644
--- a/nova/tests/unit/virt/vmwareapi/test_driver_api.py
+++ b/nova/tests/unit/virt/vmwareapi/test_driver_api.py
@@ -2470,7 +2470,7 @@ class VMwareAPIVMTestCase(test.NoDBTestCase):
 
     def test_get_host_uptime(self):
         self.assertRaises(NotImplementedError,
-                          self.conn.get_host_uptime, 'host')
+                          self.conn.get_host_uptime)
 
     def _test_finish_migration(self, power_on, resize_instance=False):
         """Tests the finish_migration method on VC Driver."""
diff --git a/nova/tests/unit/virt/xenapi/test_xenapi.py b/nova/tests/unit/virt/xenapi/test_xenapi.py
index a927244f537f..0ee23374866c 100644
--- a/nova/tests/unit/virt/xenapi/test_xenapi.py
+++ b/nova/tests/unit/virt/xenapi/test_xenapi.py
@@ -2144,7 +2144,7 @@ class XenAPIHostTestCase(stubs.XenAPITestBase):
         self.assertEqual(service.disabled, True)
 
     def test_get_host_uptime(self):
-        result = self.conn.get_host_uptime('host')
+        result = self.conn.get_host_uptime()
         self.assertEqual(result, 'fake uptime')
 
     def test_supported_instances_is_included_in_host_state(self):
diff --git a/nova/virt/driver.py b/nova/virt/driver.py
index c07d178b8003..8ade83341a9a 100644
--- a/nova/virt/driver.py
+++ b/nova/virt/driver.py
@@ -1026,7 +1026,7 @@ class ComputeDriver(object):
         # TODO(Vek): Need to pass context in for access to auth_token
         raise NotImplementedError()
 
-    def get_host_uptime(self, host):
+    def get_host_uptime(self):
         """Returns the result of calling "uptime" on the target host."""
         # TODO(Vek): Need to pass context in for access to auth_token
         raise NotImplementedError()
diff --git a/nova/virt/hyperv/driver.py b/nova/virt/hyperv/driver.py
index 50775f883628..a6ae9f53fb0d 100644
--- a/nova/virt/hyperv/driver.py
+++ b/nova/virt/hyperv/driver.py
@@ -233,7 +233,7 @@ class HyperVDriver(driver.ComputeDriver):
     def get_host_ip_addr(self):
         return self._hostops.get_host_ip_addr()
 
-    def get_host_uptime(self, host):
+    def get_host_uptime(self):
         return self._hostops.get_host_uptime()
 
     def get_rdp_console(self, context, instance):
diff --git a/nova/virt/libvirt/driver.py b/nova/virt/libvirt/driver.py
index 148c5d41b94d..1f05a0fe28bb 100644
--- a/nova/virt/libvirt/driver.py
+++ b/nova/virt/libvirt/driver.py
@@ -5637,10 +5637,8 @@ class LibvirtDriver(driver.ComputeDriver):
         stats["frequency"] = self._conn.getInfo()[3]
         return stats
 
-    def get_host_uptime(self, host):
+    def get_host_uptime(self):
         """Returns the result of calling "uptime"."""
-        # NOTE(dprince): host seems to be ignored for this call and in
-        # other compute drivers as well. Perhaps we should remove it?
         out, err = utils.execute('env', 'LANG=C', 'uptime')
         return out
 
diff --git a/nova/virt/vmwareapi/driver.py b/nova/virt/vmwareapi/driver.py
index 479f42ce5efb..82e2ecc056fc 100644
--- a/nova/virt/vmwareapi/driver.py
+++ b/nova/virt/vmwareapi/driver.py
@@ -596,7 +596,7 @@ class VMwareVCDriver(driver.ComputeDriver):
         """
         raise NotImplementedError()
 
-    def get_host_uptime(self, host):
+    def get_host_uptime(self):
         """Host uptime operation not supported by VC driver."""
 
         msg = _("Multiple hosts may be managed by the VMWare "
diff --git a/nova/virt/xenapi/driver.py b/nova/virt/xenapi/driver.py
index fd56bc15debc..1deafcb48d70 100644
--- a/nova/virt/xenapi/driver.py
+++ b/nova/virt/xenapi/driver.py
@@ -646,9 +646,9 @@ class XenAPIDriver(driver.ComputeDriver):
         """Sets the compute host's ability to accept new instances."""
         return self._host.set_host_enabled(enabled)
 
-    def get_host_uptime(self, host):
+    def get_host_uptime(self):
         """Returns the result of calling "uptime" on the target host."""
-        return self._host.get_host_uptime(host)
+        return self._host.get_host_uptime()
 
     def host_maintenance_mode(self, host, mode):
         """Start/Stop host maintenance window. On start, it triggers
diff --git a/nova/virt/xenapi/host.py b/nova/virt/xenapi/host.py
index 36ff094b5be5..e0c8fe80025d 100644
--- a/nova/virt/xenapi/host.py
+++ b/nova/virt/xenapi/host.py
@@ -132,7 +132,7 @@ class Host(object):
         response = call_xenhost(self._session, "set_host_enabled", args)
         return response.get("status", response)
 
-    def get_host_uptime(self, _host):
+    def get_host_uptime(self):
         """Returns the result of calling "uptime" on the target host."""
         response = call_xenhost(self._session, "host_uptime", {})
         return response.get("uptime", response)