diff --git a/src/core/screen.c b/src/core/screen.c
index 73d717347..8ee447082 100644
--- a/src/core/screen.c
+++ b/src/core/screen.c
@@ -40,6 +40,7 @@
 #include "xprops.h"
 #include <meta/compositor.h>
 #include "mutter-enum-types.h"
+#include "core.h"
 
 #include <X11/extensions/Xinerama.h>
 
diff --git a/src/core/window.c b/src/core/window.c
index e669fa701..9a2944d0c 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -44,6 +44,7 @@
 #include "window-props.h"
 #include "constraints.h"
 #include "mutter-enum-types.h"
+#include "core.h"
 
 #include <X11/Xatom.h>
 #include <X11/Xlibint.h> /* For display->resource_mask */