diff --git a/wmakerlib/src/application.rs b/wmakerlib/src/application.rs
index e646e429..c67da280 100644
--- a/wmakerlib/src/application.rs
+++ b/wmakerlib/src/application.rs
@@ -24,6 +24,7 @@ pub struct Application {
 pub mod ffi {
     use super::Application;
     use std::ffi::{c_int, c_void};
+    use std::ptr;
 
     #[unsafe(no_mangle)]
     pub unsafe extern "C" fn wApplicationGetMainWindow(app: *mut Application) -> x11::xlib::Window {