diff --git a/src/client/sdl/scrap.c b/src/client/sdl/scrap.c
index e86beaff931d66e9..557e33f206f84d12 100644
--- a/src/client/sdl/scrap.c
+++ b/src/client/sdl/scrap.c
@@ -57,6 +57,8 @@ typedef uint32_t scrap_type;
 #if defined(X11_SCRAP)
 /* * */
 static Display *SDL_Display;
+/* Avoid conflict with SDL_Window defined in <SDL/SDL_syswm.h>. */
+#define SDL_Window SDL_Window_variable
 static Window SDL_Window;
 static void (*Lock_Display)(void);
 static void (*Unlock_Display)(void);