Index: modules/x11/CMakeLists.txt
--- modules/x11/CMakeLists.txt.orig
+++ modules/x11/CMakeLists.txt
@@ -17,5 +17,5 @@ else()
     add_library(${PROJECT_NAME} MODULE ${SRCS})
 endif()
 
-target_include_directories(${PROJECT_NAME} PRIVATE ${X11_INCLUDE_DIR})
+target_include_directories(${PROJECT_NAME} PRIVATE ${X11_Xlib_INCLUDE_PATH})
 target_link_libraries(${PROJECT_NAME} PRIVATE ${X11_LIBRARIES})
