diff --git a/include/types/wlr_region.h b/include/types/wlr_region.h
index cd81761f..b00f8802 100644
--- a/include/types/wlr_region.h
+++ b/include/types/wlr_region.h
@@ -3,6 +3,8 @@
 
 #include <wlr/types/wlr_region.h>
 
+struct wl_client;
+
 /*
  * Creates a new region resource with the provided new ID.
  */
diff --git a/include/wlr/types/wlr_shm.h b/include/wlr/types/wlr_shm.h
index 5816c84e..396fc831 100644
--- a/include/wlr/types/wlr_shm.h
+++ b/include/wlr/types/wlr_shm.h
@@ -11,6 +11,8 @@
 
 #include <wayland-server-core.h>
 
+struct wlr_renderer;
+
 /**
  * Shared memory buffer interface.
  *