diff --git a/src/damage.rs b/src/damage.rs
index 86b0f4a6..88b0aadc 100644
--- a/src/damage.rs
+++ b/src/damage.rs
@@ -2,6 +2,7 @@ use {
     crate::{
         async_engine::AsyncEngine,
         fixed::Fixed,
+        gfx_api::GfxApiOpt,
         ifs::wl_output::WlOutputGlobal,
         rect::{Rect, Region},
         renderer::renderer_base::RendererBase,
@@ -160,6 +161,7 @@ impl DamageVisualizer {
         let dx = -cursor_rect.x1();
         let dy = -cursor_rect.y1();
         let decay_millis = decay.as_millis() as u64 as f32;
+        renderer.ops.push(GfxApiOpt::Sync);
         for entry in entries.iter().rev() {
             let region = Region::new(entry.rect);
             let region = region.subtract(&used);