diff --git a/autotests/integration/CMakeLists.txt b/autotests/integration/CMakeLists.txt
index 8e18f8b2af..e32cba0c8d 100644
--- a/autotests/integration/CMakeLists.txt
+++ b/autotests/integration/CMakeLists.txt
@@ -18,6 +18,7 @@ qt6_generate_wayland_protocol_client_sources(KWinIntegrationTestFramework
         ${WaylandProtocols_DATADIR}/staging/fractional-scale/fractional-scale-v1.xml
         ${WaylandProtocols_DATADIR}/staging/cursor-shape/cursor-shape-v1.xml
         ${WaylandProtocols_DATADIR}/staging/security-context/security-context-v1.xml
+        ${WaylandProtocols_DATADIR}/staging/xdg-dialog/xdg-dialog-v1.xml
 
         ${PLASMA_WAYLAND_PROTOCOLS_DIR}/kde-output-device-v2.xml
         ${PLASMA_WAYLAND_PROTOCOLS_DIR}/kde-output-management-v2.xml
@@ -25,37 +26,6 @@ qt6_generate_wayland_protocol_client_sources(KWinIntegrationTestFramework
         ${PLASMA_WAYLAND_PROTOCOLS_DIR}/zkde-screencast-unstable-v1.xml
         ${PLASMA_WAYLAND_PROTOCOLS_DIR}/fake-input.xml
 )
-
-if (Qt6_VERSION VERSION_LESS "6.7.1")
-    # the qtwaylandscanner macro cannot handle the mismatched file name and <protocol  name=""
-    find_package(QtWaylandScanner REQUIRED)
-    if (WaylandProtocols_VERSION VERSION_LESS 1.36)
-        ecm_add_qtwayland_client_protocol(KWinIntegrationTestFramework
-            PROTOCOL ${WaylandProtocols_DATADIR}/staging/xdg-dialog/xdg-dialog-v1.xml
-            BASENAME dialog-v1
-        )
-        target_compile_definitions(KWinIntegrationTestFramework PUBLIC
-            -DHAVE_XDG_DIALOG_V1_HEADER=0
-        )
-    else()
-        ecm_add_qtwayland_client_protocol(KWinIntegrationTestFramework
-            PROTOCOL ${WaylandProtocols_DATADIR}/staging/xdg-dialog/xdg-dialog-v1.xml
-            BASENAME xdg-dialog-v1
-        )
-        target_compile_definitions(KWinIntegrationTestFramework PUBLIC
-            -DHAVE_XDG_DIALOG_V1_HEADER=1
-        )
-    endif()
-else()
-    qt6_generate_wayland_protocol_client_sources(KWinIntegrationTestFramework
-        FILES
-            ${WaylandProtocols_DATADIR}/staging/xdg-dialog/xdg-dialog-v1.xml
-    )
-    target_compile_definitions(KWinIntegrationTestFramework PUBLIC
-        -DHAVE_XDG_DIALOG_V1_HEADER=1
-    )
-endif()
-
 target_sources(KWinIntegrationTestFramework PRIVATE
     generic_scene_opengl_test.cpp
     kwin_wayland_test.cpp
diff --git a/autotests/integration/kwin_wayland_test.h b/autotests/integration/kwin_wayland_test.h
index 363b98a92b..5b3cf371d6 100644
--- a/autotests/integration/kwin_wayland_test.h
+++ b/autotests/integration/kwin_wayland_test.h
@@ -34,11 +34,7 @@
 #include "qwayland-xdg-decoration-unstable-v1.h"
 #include "qwayland-xdg-shell.h"
 #include "qwayland-zkde-screencast-unstable-v1.h"
-#if HAVE_XDG_DIALOG_V1_HEADER
 #include "qwayland-xdg-dialog-v1.h"
-#else
-#include "qwayland-dialog-v1.h"
-#endif
 
 namespace KWayland
 {
diff --git a/src/wayland/CMakeLists.txt b/src/wayland/CMakeLists.txt
index a8bdc2bc7b..c25ae07f2e 100644
--- a/src/wayland/CMakeLists.txt
+++ b/src/wayland/CMakeLists.txt
@@ -286,25 +286,11 @@ ecm_add_qtwayland_server_protocol_kde(WaylandProtocols_xml
     PROTOCOL ${PROJECT_SOURCE_DIR}/src/wayland/protocols/xx-color-management-v4.xml
     BASENAME xx-color-management-v4
 )
-if (WaylandProtocols_VERSION VERSION_LESS 1.36)
-    ecm_add_qtwayland_server_protocol_kde(WaylandProtocols_xml
-        PRIVATE_CODE
-        PROTOCOL ${WaylandProtocols_DATADIR}/staging/xdg-dialog/xdg-dialog-v1.xml
-        BASENAME dialog-v1
-    )
-    target_compile_definitions(kwin PRIVATE
-        -DHAVE_XDG_DIALOG_V1_HEADER=0
-    )
-else()
-    ecm_add_qtwayland_server_protocol_kde(WaylandProtocols_xml
-        PRIVATE_CODE
-        PROTOCOL ${WaylandProtocols_DATADIR}/staging/xdg-dialog/xdg-dialog-v1.xml
-        BASENAME xdg-dialog-v1
-    )
-    target_compile_definitions(kwin PRIVATE
-        -DHAVE_XDG_DIALOG_V1_HEADER=1
-    )
-endif()
+ecm_add_qtwayland_server_protocol_kde(WaylandProtocols_xml
+    PRIVATE_CODE
+    PROTOCOL ${WaylandProtocols_DATADIR}/staging/xdg-dialog/xdg-dialog-v1.xml
+    BASENAME xdg-dialog-v1
+)
 ecm_add_qtwayland_server_protocol_kde(WaylandProtocols_xml
     PRIVATE_CODE
     PROTOCOL ${WaylandProtocols_DATADIR}/staging/linux-drm-syncobj/linux-drm-syncobj-v1.xml
diff --git a/src/wayland/xdgdialog_v1.cpp b/src/wayland/xdgdialog_v1.cpp
index efa8c8bed2..a161a5b901 100644
--- a/src/wayland/xdgdialog_v1.cpp
+++ b/src/wayland/xdgdialog_v1.cpp
@@ -9,11 +9,7 @@
 #include "display.h"
 #include "xdgshell.h"
 
-#if HAVE_XDG_DIALOG_V1_HEADER
 #include "qwayland-server-xdg-dialog-v1.h"
-#else
-#include "qwayland-server-dialog-v1.h"
-#endif
 
 #include <QHash>