diff --git a/mi/mi.h b/mi/mi.h
index dc34e6fda..ae33299d0 100644
--- a/mi/mi.h
+++ b/mi/mi.h
@@ -286,6 +286,9 @@ extern _X_EXPORT void miPolylines(DrawablePtr pDrawable,
 
 /* miwindow.c */
 
+extern _X_EXPORT void miMarkWindow(WindowPtr    /*pWin */
+    );
+
 extern _X_EXPORT Bool miMarkOverlappedWindows(WindowPtr /*pWin */ ,
                                               WindowPtr /*pFirst */ ,
                                               WindowPtr *       /*ppLayerWin */
diff --git a/mi/mi_priv.h b/mi/mi_priv.h
index 5f8e727d9..c2c94aefc 100644
--- a/mi/mi_priv.h
+++ b/mi/mi_priv.h
@@ -54,6 +54,5 @@ int miValidateTree(WindowPtr pParent, WindowPtr pChild, VTKind kind);
 
 void miClearToBackground(WindowPtr pWin, int x, int y, int w, int h,
                          Bool generateExposures);
-void miMarkWindow(WindowPtr pWin);
 
 #endif /* _XSERVER_MI_PRIV_H */
diff --git a/mi/mioverlay.c b/mi/mioverlay.c
index 3b8edee1b..6a03c1184 100644
--- a/mi/mioverlay.c
+++ b/mi/mioverlay.c
@@ -3,13 +3,11 @@
 
 #include <X11/X.h>
 
-#include "mi/mi_priv.h"
-
-
 #include "scrnintstr.h"
 #include <X11/extensions/shapeproto.h>
 #include "validate.h"
 #include "windowstr.h"
+#include "mi.h"
 #include "gcstruct.h"
 #include "regionstr.h"
 #include "privates.h"