diff --git a/src/x11/window/monitor.rs b/src/x11/window/monitor.rs
index a99f2f2d..c1a4897a 100644
--- a/src/x11/window/monitor.rs
+++ b/src/x11/window/monitor.rs
@@ -2,6 +2,7 @@ use std::ptr;
 use std::collections::VecDeque;
 use super::super::ffi;
 use super::ensure_thread_init;
+use window::NativeMonitorID;
 
 pub struct MonitorID(pub u32);