diff --git a/tokio/src/runtime/task/harness.rs b/tokio/src/runtime/task/harness.rs
index cf19eea83bb..8479becd80a 100644
--- a/tokio/src/runtime/task/harness.rs
+++ b/tokio/src/runtime/task/harness.rs
@@ -249,11 +249,11 @@ where
     }
 
     pub(super) fn dealloc(self) {
-        // Release the join waker, if there is one.
-        self.trailer().waker.with_mut(drop);
-
-        // Check causality
-        self.core().stage.with_mut(drop);
+        // Observe that we expect to have mutable access to these objects
+        // because we are going to drop them. This only matters when running
+        // under loom.
+        self.trailer().waker.with_mut(|_| ());
+        self.core().stage.with_mut(|_| ());
 
         // Safety: The caller of this method just transitioned our ref-count to
         // zero, so it is our responsibility to release the allocation.