diff --git a/internal/backends/mcu/stm32h735g.rs b/internal/backends/mcu/stm32h735g.rs
index 952259579..5f8c16a15 100644
--- a/internal/backends/mcu/stm32h735g.rs
+++ b/internal/backends/mcu/stm32h735g.rs
@@ -324,6 +324,7 @@ impl Devices for StmDevices {
     }
 
     fn get_buffer(&mut self) -> Option<(&mut [TargetPixel], PhysicalRect)> {
+        while self.layer.is_swap_pending() {}
         Some((self.work_fb, self.prev_dirty))
     }