diff --git a/src/x11/mod.rs b/src/x11/mod.rs
index 0f5f5575..315c2b30 100644
--- a/src/x11/mod.rs
+++ b/src/x11/mod.rs
@@ -35,8 +35,9 @@ impl Window {
             display
         };
 
-        let screen_id = unsafe {
-            ffi::XDefaultScreen(display)
+        let screen_id = match builder.monitor {
+            Some(MonitorID(monitor)) => monitor as i32,
+            None => unsafe { ffi::XDefaultScreen(display) },
         };
 
         // getting the FBConfig
diff --git a/src/x11/monitor.rs b/src/x11/monitor.rs
index f1b861bf..3b382c2f 100644
--- a/src/x11/monitor.rs
+++ b/src/x11/monitor.rs
@@ -1,7 +1,7 @@
 use std::{ptr};
 use super::ffi;
 
-pub struct MonitorID(uint);
+pub struct MonitorID(pub uint);
 
 pub fn get_available_monitors() -> Vec<MonitorID> {
     let nb_monitors = unsafe {