diff --git a/backend/backend.c b/backend/backend.c
index bf71ce31..78b90007 100644
--- a/backend/backend.c
+++ b/backend/backend.c
@@ -13,7 +13,10 @@
 #include <wlr/backend/multi.h>
 #include <wlr/backend/session.h>
 #include <wlr/backend/wayland.h>
+#include <wlr/config.h>
 #include <wlr/util/log.h>
+
+/* WLR_HAS_X11_BACKEND needs to be after wlr/config.h */
 #ifdef WLR_HAS_X11_BACKEND
 #include <wlr/backend/x11.h>
 #endif
diff --git a/backend/session/direct-ipc.c b/backend/session/direct-ipc.c
index bcaf7bba..5fdb95ac 100644
--- a/backend/session/direct-ipc.c
+++ b/backend/session/direct-ipc.c
@@ -13,6 +13,7 @@
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <unistd.h>
+#include <wlr/config.h>
 #include <wlr/util/log.h>
 #include <xf86drm.h>
 #ifdef __linux__
diff --git a/backend/session/logind.c b/backend/session/logind.c
index 47082c20..2f816b95 100644
--- a/backend/session/logind.c
+++ b/backend/session/logind.c
@@ -11,6 +11,7 @@
 #include <unistd.h>
 #include <wayland-server.h>
 #include <wlr/backend/session/interface.h>
+#include <wlr/config.h>
 #include <wlr/util/log.h>
 #include "util/signal.h"
 
diff --git a/backend/session/session.c b/backend/session/session.c
index 67d20004..8d74bafe 100644
--- a/backend/session/session.c
+++ b/backend/session/session.c
@@ -9,6 +9,7 @@
 #include <wayland-server.h>
 #include <wlr/backend/session.h>
 #include <wlr/backend/session/interface.h>
+#include <wlr/config.h>
 #include <wlr/util/log.h>
 #include <xf86drm.h>
 #include <xf86drmMode.h>
diff --git a/backend/x11/backend.c b/backend/x11/backend.c
index 077433a4..e0f5d6e7 100644
--- a/backend/x11/backend.c
+++ b/backend/x11/backend.c
@@ -7,6 +7,7 @@
 #include <wayland-server.h>
 #include <wlr/backend/interface.h>
 #include <wlr/backend/x11.h>
+#include <wlr/config.h>
 #include <wlr/interfaces/wlr_input_device.h>
 #include <wlr/interfaces/wlr_keyboard.h>
 #include <wlr/interfaces/wlr_pointer.h>
diff --git a/backend/x11/input_device.c b/backend/x11/input_device.c
index 890dd629..a16da1c9 100644
--- a/backend/x11/input_device.c
+++ b/backend/x11/input_device.c
@@ -1,4 +1,5 @@
 #include <stdlib.h>
+#include <wlr/config.h>
 #include <wlr/interfaces/wlr_input_device.h>
 #include <wlr/interfaces/wlr_keyboard.h>
 #include <wlr/interfaces/wlr_pointer.h>
diff --git a/meson.build b/meson.build
index d43d22f1..5fd89832 100644
--- a/meson.build
+++ b/meson.build
@@ -25,10 +25,6 @@ add_project_arguments(
 	'-I@0@'.format(meson.build_root()),
 	language: 'c',
 )
-add_project_arguments(
-	'-include@0@'.format(join_paths(meson.build_root(), 'include', 'wlr', 'config.h')),
-	language: 'c',
-)
 add_project_link_arguments(
 	'-Wl,-rpath,@0@'.format(meson.build_root()),
 	language: 'c',
diff --git a/types/tablet_v2/wlr_tablet_v2.c b/types/tablet_v2/wlr_tablet_v2.c
index 9654e443..fa058e79 100644
--- a/types/tablet_v2/wlr_tablet_v2.c
+++ b/types/tablet_v2/wlr_tablet_v2.c
@@ -8,6 +8,7 @@
 #include <string.h>
 #include <wayland-server.h>
 #include <types/wlr_tablet_v2.h>
+#include <wlr/config.h>
 #include <wlr/types/wlr_seat.h>
 #include <wlr/types/wlr_tablet_tool.h>
 #include <wlr/types/wlr_tablet_v2.h>
diff --git a/xwayland/xwm.c b/xwayland/xwm.c
index 9bf8068e..6632b5fc 100644
--- a/xwayland/xwm.c
+++ b/xwayland/xwm.c
@@ -4,6 +4,7 @@
 #include <assert.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <wlr/config.h>
 #include <wlr/types/wlr_surface.h>
 #include <wlr/util/edges.h>
 #include <wlr/util/log.h>