diff --git a/PVE/API2/Ceph.pm b/PVE/API2/Ceph.pm
index 69e82fc4..9aac454b 100644
--- a/PVE/API2/Ceph.pm
+++ b/PVE/API2/Ceph.pm
@@ -1351,6 +1351,7 @@ __PACKAGE__->register_method ({
 		description => 'Ceph service name.',
 		type => 'string',
 		optional => 1,
+		default => 'ceph.target',
 		pattern => '(mon|mds|osd|mgr)\.[A-Za-z0-9\-]{1,32}',
 	    },
 	},
@@ -1401,6 +1402,7 @@ __PACKAGE__->register_method ({
 		description => 'Ceph service name.',
 		type => 'string',
 		optional => 1,
+		default => 'ceph.target',
 		pattern => '(mon|mds|osd|mgr)\.[A-Za-z0-9\-]{1,32}',
 	    },
 	},
@@ -1451,6 +1453,7 @@ __PACKAGE__->register_method ({
 		description => 'Ceph service name.',
 		type => 'string',
 		optional => 1,
+		default => 'ceph.target',
 		pattern => '(mon|mds|osd|mgr)\.[A-Za-z0-9\-]{1,32}',
 	    },
 	},