diff -r 2dc61cc5a8ac -r 54819e984a19 dav/optparser.c
--- a/dav/optparser.c	Mon Oct 09 14:55:47 2017 +0200
+++ b/dav/optparser.c	Thu Oct 12 20:37:46 2017 +0200
@@ -128,6 +128,10 @@
                         ucx_map_cstr_put(a->options, "structure", NOARG);
                         break;
                     }
+                    case 'K': {
+                        ucx_map_cstr_put(a->options, "keep", NOARG);
+                        break;
+                    }
                     case 'o': {
                         if(!option) {
                             option = "output";