diff --git a/include/ircd/db/db.h b/include/ircd/db/db.h
index 8b112d1cc..dadb06524 100644
--- a/include/ircd/db/db.h
+++ b/include/ircd/db/db.h
@@ -39,7 +39,7 @@ namespace ircd::db
 #include "delta.h"
 #include "comparator.h"
 #include "compactor.h"
-#include "prefix.h"
+#include "prefix_transform.h"
 #include "merge.h"
 #include "descriptor.h"
 #include "database/rocksdb.h"
diff --git a/include/ircd/db/prefix.h b/include/ircd/db/prefix_transform.h
similarity index 86%
rename from include/ircd/db/prefix.h
rename to include/ircd/db/prefix_transform.h
index 7327d986b..c59e797e3 100644
--- a/include/ircd/db/prefix.h
+++ b/include/ircd/db/prefix_transform.h
@@ -1,7 +1,7 @@
 // Matrix Construct
 //
 // Copyright (C) Matrix Construct Developers, Authors & Contributors
-// Copyright (C) 2016-2018 Jason Volk <jason@zemos.net>
+// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
 //
 // Permission to use, copy, modify, and/or distribute this software for any
 // purpose with or without fee is hereby granted, provided that the above
@@ -9,7 +9,7 @@
 // full license for this software is available in the LICENSE file.
 
 #pragma once
-#define HAVE_IRCD_DB_PREFIX_H
+#define HAVE_IRCD_DB_PREFIX_TRANSFORM_H
 
 namespace ircd::db
 {