diff --git a/wmakerlib/src/wrlib.rs b/wmakerlib/src/wrlib.rs
index a267aad7..e9aa519f 100644
--- a/wmakerlib/src/wrlib.rs
+++ b/wmakerlib/src/wrlib.rs
@@ -25,4 +25,9 @@ pub struct Image {
 }
 
 pub mod ffi {
+    use super::Image;
+
+    unsafe extern "C" {
+        pub fn RRetainImage(image: *mut Image) -> *mut Image;
+    }
 }