diff --git a/src/core/boxes.c b/src/core/boxes.c
index 92e0a01e9..315844a88 100644
--- a/src/core/boxes.c
+++ b/src/core/boxes.c
@@ -34,7 +34,6 @@
 #include "core/boxes-private.h"
 
 #include <math.h>
-#include <X11/Xutil.h>
 
 #include "meta/util.h"
 
diff --git a/src/core/display-private.h b/src/core/display-private.h
index f9e171131..e4f28d725 100644
--- a/src/core/display-private.h
+++ b/src/core/display-private.h
@@ -28,8 +28,6 @@
 #include "meta/display.h"
 
 #include <glib.h>
-#include <X11/extensions/sync.h>
-#include <X11/Xlib.h>
 
 #include "clutter/clutter.h"
 #include "core/keybindings-private.h"
diff --git a/src/core/util.c b/src/core/util.c
index fddd06fdd..79adb11bb 100644
--- a/src/core/util.c
+++ b/src/core/util.c
@@ -34,8 +34,6 @@
 #include <unistd.h>
 #include <errno.h>
 #include <string.h>
-#include <X11/Xlib.h>   /* must explicitly be included for Solaris; #326746 */
-#include <X11/Xutil.h>  /* Just for the definition of the various gravities */
 
 #ifdef HAVE_SYS_PRCTL
 #include <sys/prctl.h>
diff --git a/src/core/workspace.c b/src/core/workspace.c
index 9718f31e1..87f4fccec 100644
--- a/src/core/workspace.c
+++ b/src/core/workspace.c
@@ -35,7 +35,6 @@
 
 #include "meta/workspace.h"
 
-#include <X11/Xatom.h>
 #include <string.h>
 
 #include "backends/meta-backend-private.h"