diff --git a/daemons/lvmdbusd/cmdhandler.py b/daemons/lvmdbusd/cmdhandler.py
index cf2a70875..cf9803e76 100644
--- a/daemons/lvmdbusd/cmdhandler.py
+++ b/daemons/lvmdbusd/cmdhandler.py
@@ -787,6 +787,10 @@ def activate_deactivate(op, name, activate, control_flags, options):
 		if (1 << 5) & control_flags:
 			cmd.append('--ignoreactivationskip')
 
+		# Shared locking (Cluster)
+		if (1 << 6) & control_flags:
+			op += 's'
+
 	if activate:
 		op += 'y'
 	else:
diff --git a/test/dbus/lvmdbustest.py b/test/dbus/lvmdbustest.py
index 8f95757eb..475f328cb 100755
--- a/test/dbus/lvmdbustest.py
+++ b/test/dbus/lvmdbustest.py
@@ -1243,7 +1243,7 @@ class TestDbusService(unittest.TestCase):
 			self._check_consistency()
 
 		# Try control flags
-		for i in range(0, 5):
+		for i in range(0, 6):
 
 			self.handle_return(lv_p.Lv.Activate(
 				dbus.UInt64(1 << i),