diff --git a/clients/wayland-glib.h b/clients/wayland-glib.h
index 0563bec9..13ff2ca2 100644
--- a/clients/wayland-glib.h
+++ b/clients/wayland-glib.h
@@ -24,6 +24,7 @@
 #define _WAYLAND_GLIB_H_
 
 #include <glib/gmain.h>
+#include <wayland-client.h>
 
 GSource *wl_glib_source_new(struct wl_display *display);
 
diff --git a/clients/window.h b/clients/window.h
index de7ccce0..7b967049 100644
--- a/clients/window.h
+++ b/clients/window.h
@@ -23,6 +23,9 @@
 #ifndef _WINDOW_H_
 #define _WINDOW_H_
 
+#include <glib.h>
+#include <wayland-client.h>
+
 struct window;
 
 struct rectangle {