diff --git a/src/x11/window/mod.rs b/src/x11/window/mod.rs
index 1457c63e..f4c296a1 100644
--- a/src/x11/window/mod.rs
+++ b/src/x11/window/mod.rs
@@ -18,7 +18,7 @@ static THREAD_INIT: Once = ONCE_INIT;
 
 fn x_error_callback(_: *mut ffi::Display, event: *mut ffi::XErrorEvent) -> libc::c_int {
     unsafe {
-        println!("x error code={} major={} minor={}!", (*event).error_code, (*event).request_code, (*event).minor_code);
+        println!("[glutin] x error code={} major={} minor={}!", (*event).error_code, (*event).request_code, (*event).minor_code);
     }
     0
 }