diff --git a/PVE/API2/ReplicationConfig.pm b/PVE/API2/ReplicationConfig.pm
index 2b4ecd10..b85e5804 100644
--- a/PVE/API2/ReplicationConfig.pm
+++ b/PVE/API2/ReplicationConfig.pm
@@ -138,6 +138,7 @@ __PACKAGE__->register_method ({
 	    my $opts = $plugin->check_config($id, $param, 1, 1);
 
 	    $opts->{guest} = $guest;
+	    $opts->{source} //= $vmlist->{ids}->{$guest}->{node};
 
 	    $cfg->{ids}->{$id} = $opts;