diff --git a/src/hydra-queue-runner/build-remote.cc b/src/hydra-queue-runner/build-remote.cc
index 696077de..5d0f9a45 100644
--- a/src/hydra-queue-runner/build-remote.cc
+++ b/src/hydra-queue-runner/build-remote.cc
@@ -287,9 +287,9 @@ void State::buildRemote(ref<Store> destStore,
            this will copy the inputs to the binary cache from the local
            store. */
         if (localStore != std::shared_ptr<Store>(destStore)) {
-            StorePathSet closure;
-            localStore->computeFSClosure(step->drv->inputSrcs, closure);
-            copyPaths(*localStore, *destStore, closure, NoRepair, NoCheckSigs, NoSubstitute);
+            copyClosure(*localStore, *destStore,
+                step->drv->inputSrcs,
+                NoRepair, NoCheckSigs, NoSubstitute);
         }
 
         {
diff --git a/src/hydra-queue-runner/queue-monitor.cc b/src/hydra-queue-runner/queue-monitor.cc
index 49caf8e3..3f19d36a 100644
--- a/src/hydra-queue-runner/queue-monitor.cc
+++ b/src/hydra-queue-runner/queue-monitor.cc
@@ -513,9 +513,9 @@ Step::ptr State::createStep(ref<Store> destStore,
                         // FIXME: should copy directly from substituter to destStore.
                     }
 
-                    StorePathSet closure;
-                    localStore->computeFSClosure({*path}, closure);
-                    copyPaths(*localStore, *destStore, closure, NoRepair, CheckSigs, NoSubstitute);
+                    copyClosure(*localStore, *destStore,
+                        StorePathSet { *path },
+                        NoRepair, CheckSigs, NoSubstitute);
 
                     time_t stopTime = time(0);