diff --git a/src/desktop/space/mod.rs b/src/desktop/space/mod.rs
index 08b5b3e..7065ec2 100644
--- a/src/desktop/space/mod.rs
+++ b/src/desktop/space/mod.rs
@@ -411,7 +411,7 @@ impl Space {
         custom_elements: &[Box<
             dyn RenderElement<R, <R as Renderer>::Frame, <R as Renderer>::Error, <R as Renderer>::TextureId>,
         >],
-    ) -> Result<bool, RenderError<R>>
+    ) -> Result<Option<Vec<Rectangle<i32, Logical>>>, RenderError<R>>
     where
         R: Renderer + ImportAll + 'static,
         R::TextureId: 'static,
@@ -520,7 +520,7 @@ impl Space {
         });
 
         if damage.is_empty() {
-            return Ok(false);
+            return Ok(None);
         }
 
         let output_transform: Transform = output.current_transform().into();
@@ -605,9 +605,9 @@ impl Space {
                 (ToplevelId::from(elem), geo)
             })
             .collect();
-        state.old_damage.push_front(new_damage);
+        state.old_damage.push_front(new_damage.clone());
 
-        Ok(true)
+        Ok(Some(new_damage))
     }
 
     pub fn send_frames(&self, all: bool, time: u32) {