--- a/Source/WebCore/platform/graphics/x11/PlatformDisplayX11.cpp	2021-09-24 22:06:41.890016115 -0300
+++ b/Source/WebCore/platform/graphics/x11/PlatformDisplayX11.cpp	2021-09-24 22:06:44.420016124 -0300
@@ -28,6 +28,8 @@
 
 #include "GLContext.h"
 
+#include <X11/Xutil.h>
+
 #if PLATFORM(X11)
 #include <X11/Xlib.h>
 #include <X11/extensions/Xcomposite.h>