diff --git a/windows/src/app.rs b/windows/src/app.rs
index 1e26eb9..a0c28c5 100644
--- a/windows/src/app.rs
+++ b/windows/src/app.rs
@@ -1,4 +1,4 @@
-use std::ffi::CString;
+use std::ffi::{c_void, CString};
 
 use winit::application::ApplicationHandler;
 use winit::dpi::{LogicalSize, PhysicalPosition};