diff --git a/neo/CMakeLists.txt b/neo/CMakeLists.txt
index 1e4d62ff..37ce393e 100644
--- a/neo/CMakeLists.txt
+++ b/neo/CMakeLists.txt
@@ -121,11 +121,6 @@ include_directories(${VORBISFILE_INCLUDE_DIR})
 find_package(OpenAL REQUIRED)
 include_directories(${OPENAL_INCLUDE_DIR})
 
-if(NOT AROS)
-	find_package(X11 REQUIRED)
-	include_directories(${X11_INCLUDE_DIR})
-endif()
-
 if (SDL2)
 	# skip SDL2main
 	if(APPLE OR WIN32)
diff --git a/neo/sys/glimp.cpp b/neo/sys/glimp.cpp
index c92e6c2b..8b19b526 100644
--- a/neo/sys/glimp.cpp
+++ b/neo/sys/glimp.cpp
@@ -27,7 +27,6 @@ If you have questions concerning this license or the applicable additional terms
 */
 
 #include <SDL.h>
-#include <SDL_syswm.h>
 
 #include "sys/platform.h"
 #include "framework/Licensee.h"