diff --git a/shm.h b/shm.h
index 43398cc9..dc37f1b7 100644
--- a/shm.h
+++ b/shm.h
@@ -7,7 +7,7 @@
 #include <pixman.h>
 #include <wayland-client.h>
 
-#include "terminal.h"
+struct damage;
 
 struct buffer {
     bool locked;           /* Caller owned, shm won’t destroy it */