diff -r 21274e5950af -r a1f4cb076d2f src/server/util/pblock.h
--- a/src/server/util/pblock.h	Tue Aug 13 22:14:32 2019 +0200
+++ b/src/server/util/pblock.h	Sat Sep 24 16:26:10 2022 +0200
@@ -301,6 +301,12 @@
 extern const pb_key *const pb_key_vary;
 extern const pb_key *const pb_key_via;
 extern const pb_key *const pb_key_warning;
+extern const pb_key *const pb_key_depth;
+extern const pb_key *const pb_key_if;
+extern const pb_key *const pb_key_vfs;
+extern const pb_key *const pb_key_dav;
+extern const pb_key *const pb_key_vfsclass;
+extern const pb_key *const pb_key_davclass;
 
 NSAPI_PUBLIC pool_handle_t *pblock_pool(pblock *pb);