diff --git a/src/backends/metal/video.rs b/src/backends/metal/video.rs
index 1ede708a..3a7e043c 100644
--- a/src/backends/metal/video.rs
+++ b/src/backends/metal/video.rs
@@ -315,7 +315,7 @@ impl BackendDrmDevice for MetalDrmDevice {
                 c.post_commit_margin.set(margin);
                 c.post_commit_margin_decay.reset(margin);
                 if let Some(output) = self.backend.state.root.outputs.get(&c.connector_id) {
-                    output.flip_margin_ns.set(Some(margin));
+                    output.set_flip_margin(margin);
                 }
             }
         }
@@ -2467,7 +2467,7 @@ impl MetalBackend {
         };
         connector.post_commit_margin.set(new_margin);
         if let Some(global) = &global {
-            global.flip_margin_ns.set(Some(new_margin));
+            global.set_flip_margin(new_margin);
         }
     }
 
diff --git a/src/tree/output.rs b/src/tree/output.rs
index 7eda4d6c..1fdd8659 100644
--- a/src/tree/output.rs
+++ b/src/tree/output.rs
@@ -1540,6 +1540,10 @@ impl OutputNode {
                 log::error!("Could not set gamma_lut: {}", ErrorFmt(e));
             })
     }
+
+    pub fn set_flip_margin(&self, margin_ns: u64) {
+        self.flip_margin_ns.set(Some(margin_ns));
+    }
 }
 
 pub struct OutputTitle {