diff --git a/src/wayland/CMakeLists.txt b/src/wayland/CMakeLists.txt
index 93bdea83f4..a93f54d9dc 100644
--- a/src/wayland/CMakeLists.txt
+++ b/src/wayland/CMakeLists.txt
@@ -371,6 +371,7 @@ install(FILES
 
 # make available to ecm_add_qch in parent folder
 set(KWaylandServer_APIDOX_SRCS ${SERVER_LIB_HEADERS} PARENT_SCOPE)
+set(KWaylandServer_APIDOX_BUILD_INCLUDE_DIRS ${CMAKE_CURRENT_BINARY_DIR} PARENT_SCOPE)
 
 include(ECMGeneratePriFile)
 ecm_generate_pri_file(BASE_NAME KWaylandServer LIB_NAME KF5WaylandServer DEPS "core" FILENAME_VAR PRI_FILENAME INCLUDE_INSTALL_DIR ${KDE_INSTALL_INCLUDEDIR_KF5})