diff --git a/miext/sync/misyncstr.h b/miext/sync/misyncstr.h
index b5bf6fd91..ad69e8eca 100644
--- a/miext/sync/misyncstr.h
+++ b/miext/sync/misyncstr.h
@@ -29,6 +29,7 @@
 #define _MISYNCSTR_H_
 
 #include "dix.h"
+#include "misync.h"
 #include "scrnintstr.h"
 #include <X11/extensions/syncconst.h>