diff --git a/crates/gpui2/src/platform/mac/dispatcher.rs b/crates/gpui2/src/platform/mac/dispatcher.rs
index 8a0d860ef845f36dccf3a967be94928ed0987e0c..0969547009fae939680e47e350b020518184a6e1 100644
--- a/crates/gpui2/src/platform/mac/dispatcher.rs
+++ b/crates/gpui2/src/platform/mac/dispatcher.rs
@@ -72,6 +72,7 @@ impl PlatformDispatcher for MacDispatcher {
         false
     }
 
+    #[cfg(any(test, feature = "test-support"))]
     fn advance_clock(&self, _: Duration) {
         unimplemented!()
     }