diff --git a/src/dialog.h b/src/dialog.h
index 69093f10..c39e2afe 100644
--- a/src/dialog.h
+++ b/src/dialog.h
@@ -22,6 +22,7 @@
 #ifndef WMDIALOG_H_
 #define WMDIALOG_H_
 
+#include "screen.h"
 
 enum {
     WMAbort=0,