diff --git a/server/modules/routing/readwritesplit/rwbackend.hh b/include/maxscale/protocol/rwbackend.hh
similarity index 99%
rename from server/modules/routing/readwritesplit/rwbackend.hh
rename to include/maxscale/protocol/rwbackend.hh
index ae59623c3..2946012b0 100644
--- a/server/modules/routing/readwritesplit/rwbackend.hh
+++ b/include/maxscale/protocol/rwbackend.hh
@@ -12,13 +12,12 @@
  */
 #pragma once
 
-#include "response_stat.hh"
-
 #include <map>
 #include <memory>
 
 #include <maxscale/backend.hh>
 #include <maxscale/modutil.h>
+#include <maxscale/response_stat.hh>
 
 namespace maxscale
 {
diff --git a/server/modules/routing/readwritesplit/response_stat.hh b/include/maxscale/response_stat.hh
similarity index 100%
rename from server/modules/routing/readwritesplit/response_stat.hh
rename to include/maxscale/response_stat.hh
diff --git a/server/core/CMakeLists.txt b/server/core/CMakeLists.txt
index bfbb61cb9..8b66db098 100644
--- a/server/core/CMakeLists.txt
+++ b/server/core/CMakeLists.txt
@@ -33,8 +33,9 @@ add_library(maxscale-common SHARED
   queryclassifier.cc
   query_classifier.cc
   random.cc
-  resultset.cc
   resource.cc
+  response_stat.cc
+  resultset.cc
   router.cc
   routingworker.cc
   secrets.cc
diff --git a/server/modules/routing/readwritesplit/response_stat.cc b/server/core/response_stat.cc
similarity index 98%
rename from server/modules/routing/readwritesplit/response_stat.cc
rename to server/core/response_stat.cc
index abb05fdf4..a198da64d 100644
--- a/server/modules/routing/readwritesplit/response_stat.cc
+++ b/server/core/response_stat.cc
@@ -10,7 +10,7 @@
  * of this software will be governed by version 2 or later of the General
  * Public License.
  */
-#include "response_stat.hh"
+#include <maxscale/response_stat.hh>
 
 #include <algorithm>
 
diff --git a/server/modules/protocol/MySQL/CMakeLists.txt b/server/modules/protocol/MySQL/CMakeLists.txt
index a9ceabada..0d435b098 100644
--- a/server/modules/protocol/MySQL/CMakeLists.txt
+++ b/server/modules/protocol/MySQL/CMakeLists.txt
@@ -1,4 +1,4 @@
-add_library(mysqlcommon SHARED mysql_common.cc mariadb_client.cc)
+add_library(mysqlcommon SHARED mysql_common.cc mariadb_client.cc rwbackend.cc)
 target_link_libraries(mysqlcommon maxscale-common)
 set_target_properties(mysqlcommon PROPERTIES VERSION "2.0.0")
 install_module(mysqlcommon core)
diff --git a/server/modules/routing/readwritesplit/rwbackend.cc b/server/modules/protocol/MySQL/rwbackend.cc
similarity index 94%
rename from server/modules/routing/readwritesplit/rwbackend.cc
rename to server/modules/protocol/MySQL/rwbackend.cc
index 3209c3266..e57b811fc 100644
--- a/server/modules/routing/readwritesplit/rwbackend.cc
+++ b/server/modules/protocol/MySQL/rwbackend.cc
@@ -1,4 +1,17 @@
-#include "rwbackend.hh"
+/*
+ * Copyright (c) 2016 MariaDB Corporation Ab
+ *
+ * Use of this software is governed by the Business Source License included
+ * in the LICENSE.TXT file and at www.mariadb.com/bsl11.
+ *
+ * Change Date: 2022-01-01
+ *
+ * On the date above, in accordance with the Business Source License, use
+ * of this software will be governed by version 2 or later of the General
+ * Public License.
+ */
+
+#include <maxscale/protocol/rwbackend.hh>
 
 #include <maxscale/modutil.h>
 #include <maxscale/protocol/mysql.h>
diff --git a/server/modules/routing/cat/CMakeLists.txt b/server/modules/routing/cat/CMakeLists.txt
index 72106aa56..571486f6d 100644
--- a/server/modules/routing/cat/CMakeLists.txt
+++ b/server/modules/routing/cat/CMakeLists.txt
@@ -1,4 +1,4 @@
-add_library(cat SHARED cat.cc catsession.cc ../readwritesplit/rwbackend.cc ../readwritesplit/response_stat.cc)
+add_library(cat SHARED cat.cc catsession.cc)
 target_link_libraries(cat maxscale-common mysqlcommon)
 set_target_properties(cat PROPERTIES VERSION "1.0.0"  LINK_FLAGS -Wl,-z,defs)
 install_module(cat experimental)
diff --git a/server/modules/routing/cat/catsession.hh b/server/modules/routing/cat/catsession.hh
index 7e4e8878a..17456c6e7 100644
--- a/server/modules/routing/cat/catsession.hh
+++ b/server/modules/routing/cat/catsession.hh
@@ -14,7 +14,7 @@
 
 #include "cat.hh"
 
-#include "../readwritesplit/rwbackend.hh"
+#include <maxscale/protocol/rwbackend.hh>
 
 class Cat;
 
diff --git a/server/modules/routing/readwritesplit/CMakeLists.txt b/server/modules/routing/readwritesplit/CMakeLists.txt
index 53b583ae8..abbaea39c 100644
--- a/server/modules/routing/readwritesplit/CMakeLists.txt
+++ b/server/modules/routing/readwritesplit/CMakeLists.txt
@@ -5,8 +5,6 @@ rwsplit_mysql.cc
 rwsplit_route_stmt.cc
 rwsplit_select_backends.cc
 rwsplit_session_cmd.cc
-rwbackend.cc
-response_stat.cc
 )
 target_link_libraries(readwritesplit maxscale-common mysqlcommon)
 set_target_properties(readwritesplit PROPERTIES VERSION "1.0.2"  LINK_FLAGS -Wl,-z,defs)
diff --git a/server/modules/routing/readwritesplit/readwritesplit.hh b/server/modules/routing/readwritesplit/readwritesplit.hh
index 2386b60b1..46d95003c 100644
--- a/server/modules/routing/readwritesplit/readwritesplit.hh
+++ b/server/modules/routing/readwritesplit/readwritesplit.hh
@@ -35,8 +35,7 @@
 #include <maxscale/session_command.hh>
 #include <maxscale/protocol/mysql.h>
 #include <maxscale/routingworker.hh>
-
-#include "rwbackend.hh"
+#include <maxscale/protocol/rwbackend.hh>
 
 enum backend_type_t
 {
diff --git a/server/modules/routing/readwritesplit/rwsplitsession.hh b/server/modules/routing/readwritesplit/rwsplitsession.hh
index bab403ee4..6cc37ad39 100644
--- a/server/modules/routing/readwritesplit/rwsplitsession.hh
+++ b/server/modules/routing/readwritesplit/rwsplitsession.hh
@@ -13,7 +13,6 @@
 #pragma once
 
 #include "readwritesplit.hh"
-#include "rwbackend.hh"
 #include "trx.hh"
 
 #include <string>
@@ -21,6 +20,7 @@
 #include <maxscale/buffer.hh>
 #include <maxscale/modutil.h>
 #include <maxscale/queryclassifier.hh>
+#include <maxscale/protocol/rwbackend.hh>
 
 #define TARGET_IS_MASTER(t)       maxscale::QueryClassifier::target_is_master(t)
 #define TARGET_IS_SLAVE(t)        maxscale::QueryClassifier::target_is_slave(t)