--- a/glfw/x11_window.c
+++ b/glfw/x11_window.c
@@ -43,6 +43,8 @@
#include <errno.h>
#include <assert.h>
+#include "reallocarray.c"
+
// Action for EWMH client messages
#define _NET_WM_STATE_REMOVE 0
#define _NET_WM_STATE_ADD 1