diff --git a/src/backends/drm/drm_backend.cpp b/src/backends/drm/drm_backend.cpp
index edb1cbc591..2a54b2b869 100644
--- a/src/backends/drm/drm_backend.cpp
+++ b/src/backends/drm/drm_backend.cpp
@@ -12,17 +12,13 @@
 
 #include "backends/libinput/libinputbackend.h"
 #include "core/outputconfiguration.h"
-#include "core/renderloop.h"
 #include "core/session.h"
 #include "dmabuftexture.h"
-#include "drm_connector.h"
-#include "drm_crtc.h"
 #include "drm_egl_backend.h"
 #include "drm_gpu.h"
 #include "drm_logging.h"
 #include "drm_output.h"
 #include "drm_pipeline.h"
-#include "drm_plane.h"
 #include "drm_qpainter_backend.h"
 #include "drm_render_backend.h"
 #include "drm_virtual_output.h"
diff --git a/src/backends/drm/drm_egl_backend.cpp b/src/backends/drm/drm_egl_backend.cpp
index 73ef8cff82..fcf6305cea 100644
--- a/src/backends/drm/drm_egl_backend.cpp
+++ b/src/backends/drm/drm_egl_backend.cpp
@@ -10,26 +10,15 @@
 #include "platformsupport/scenes/opengl/basiceglsurfacetexture_internal.h"
 #include "platformsupport/scenes/opengl/basiceglsurfacetexture_wayland.h"
 // kwin
-#include "core/renderloop_p.h"
 #include "drm_abstract_output.h"
 #include "drm_backend.h"
-#include "drm_dumb_swapchain.h"
 #include "drm_egl_cursor_layer.h"
 #include "drm_egl_layer.h"
-#include "drm_gbm_swapchain.h"
 #include "drm_gpu.h"
 #include "drm_logging.h"
-#include "drm_output.h"
 #include "drm_pipeline.h"
 #include "drm_virtual_egl_layer.h"
 #include "kwineglutils_p.h"
-#include "options.h"
-#include "scene/surfaceitem_wayland.h"
-#include "wayland/clientconnection.h"
-#include "wayland/surface_interface.h"
-// kwin libs
-#include "libkwineffects/kwineglimagetexture.h"
-#include "libkwineffects/kwinglplatform.h"
 // system
 #include <drm_fourcc.h>
 #include <errno.h>
diff --git a/src/backends/drm/drm_egl_layer.cpp b/src/backends/drm/drm_egl_layer.cpp
index 4275d789f2..02f27198f2 100644
--- a/src/backends/drm/drm_egl_layer.cpp
+++ b/src/backends/drm/drm_egl_layer.cpp
@@ -7,12 +7,10 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #include "drm_egl_layer.h"
-#include "drm_abstract_output.h"
 #include "drm_backend.h"
 #include "drm_buffer.h"
 #include "drm_egl_backend.h"
 #include "drm_gpu.h"
-#include "drm_logging.h"
 #include "drm_output.h"
 #include "drm_pipeline.h"
 #include "scene/surfaceitem_wayland.h"
diff --git a/src/backends/drm/drm_egl_layer_surface.cpp b/src/backends/drm/drm_egl_layer_surface.cpp
index 0f2caf40de..63b5d7bef6 100644
--- a/src/backends/drm/drm_egl_layer_surface.cpp
+++ b/src/backends/drm/drm_egl_layer_surface.cpp
@@ -15,7 +15,6 @@
 #include "drm_gbm_swapchain.h"
 #include "drm_gpu.h"
 #include "drm_logging.h"
-#include "gbm_dmabuf.h"
 
 #include <drm_fourcc.h>
 #include <errno.h>
diff --git a/src/backends/drm/drm_gpu.cpp b/src/backends/drm/drm_gpu.cpp
index d362d1361c..155e79d8df 100644
--- a/src/backends/drm/drm_gpu.cpp
+++ b/src/backends/drm/drm_gpu.cpp
@@ -10,9 +10,7 @@
 
 #include <config-kwin.h>
 
-#include "core/renderloop_p.h"
 #include "core/session.h"
-#include "drm_atomic_commit.h"
 #include "drm_backend.h"
 #include "drm_buffer.h"
 #include "drm_connector.h"
@@ -24,8 +22,6 @@
 #include "drm_pipeline.h"
 #include "drm_plane.h"
 #include "drm_virtual_output.h"
-#include "gbm_dmabuf.h"
-#include "platformsupport/scenes/opengl/abstract_egl_backend.h"
 // system
 #include <algorithm>
 #include <errno.h>
diff --git a/src/backends/drm/drm_output.cpp b/src/backends/drm/drm_output.cpp
index 33036edbb3..dce7a9f7b5 100644
--- a/src/backends/drm/drm_output.cpp
+++ b/src/backends/drm/drm_output.cpp
@@ -18,8 +18,6 @@
 #include "core/renderloop_p.h"
 #include "drm_layer.h"
 #include "drm_logging.h"
-#include "libkwineffects/kwinglutils.h"
-#include "libkwineffects/renderviewport.h"
 // Qt
 #include <QCryptographicHash>
 #include <QMatrix4x4>
diff --git a/src/backends/drm/drm_qpainter_backend.cpp b/src/backends/drm/drm_qpainter_backend.cpp
index 0c2de0a9ea..efb6463d5f 100644
--- a/src/backends/drm/drm_qpainter_backend.cpp
+++ b/src/backends/drm/drm_qpainter_backend.cpp
@@ -7,10 +7,7 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #include "drm_qpainter_backend.h"
-#include "core/renderloop_p.h"
 #include "drm_backend.h"
-#include "drm_buffer.h"
-#include "drm_gpu.h"
 #include "drm_output.h"
 #include "drm_pipeline.h"
 #include "drm_qpainter_layer.h"
diff --git a/src/backends/drm/drm_qpainter_backend.h b/src/backends/drm/drm_qpainter_backend.h
index 7c5d0c2dee..6ce543eed7 100644
--- a/src/backends/drm/drm_qpainter_backend.h
+++ b/src/backends/drm/drm_qpainter_backend.h
@@ -7,7 +7,6 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #pragma once
-#include "drm_dumb_swapchain.h"
 #include "drm_render_backend.h"
 #include "platformsupport/scenes/qpainter/qpainterbackend.h"
 
diff --git a/src/backends/drm/drm_virtual_egl_layer.cpp b/src/backends/drm/drm_virtual_egl_layer.cpp
index 8537faeccc..4145d774f1 100644
--- a/src/backends/drm/drm_virtual_egl_layer.cpp
+++ b/src/backends/drm/drm_virtual_egl_layer.cpp
@@ -7,18 +7,11 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 #include "drm_virtual_egl_layer.h"
-#include "drm_abstract_output.h"
-#include "drm_backend.h"
-#include "drm_dumb_swapchain.h"
 #include "drm_egl_backend.h"
 #include "drm_gbm_swapchain.h"
 #include "drm_gpu.h"
 #include "drm_logging.h"
-#include "drm_output.h"
-#include "drm_pipeline.h"
 #include "drm_virtual_output.h"
-#include "gbm_dmabuf.h"
-#include "kwineglutils_p.h"
 #include "scene/surfaceitem_wayland.h"
 #include "wayland/surface_interface.h"
 
diff --git a/src/backends/drm/drm_virtual_output.cpp b/src/backends/drm/drm_virtual_output.cpp
index 587698e225..089d85b980 100644
--- a/src/backends/drm/drm_virtual_output.cpp
+++ b/src/backends/drm/drm_virtual_output.cpp
@@ -9,11 +9,9 @@
 */
 #include "drm_virtual_output.h"
 
-#include "core/renderloop_p.h"
 #include "drm_backend.h"
 #include "drm_gpu.h"
 #include "drm_layer.h"
-#include "drm_logging.h"
 #include "drm_render_backend.h"
 #include "utils/softwarevsyncmonitor.h"