diff --git a/src/hydra-queue-runner/build-remote.cc b/src/hydra-queue-runner/build-remote.cc
index 17b9cdec..9f789978 100644
--- a/src/hydra-queue-runner/build-remote.cc
+++ b/src/hydra-queue-runner/build-remote.cc
@@ -267,7 +267,7 @@ void State::buildRemote(ref<Store> destStore,
         if (localStore != std::shared_ptr<Store>(destStore)) {
             StorePathSet closure;
             localStore->computeFSClosure(step->drv->inputSrcs, closure);
-            copyPaths(ref<Store>(localStore), destStore, closure, NoRepair, NoCheckSigs, NoSubstitute);
+            copyPaths(*localStore, *destStore, closure, NoRepair, NoCheckSigs, NoSubstitute);
         }
 
         /* Copy the input closure. */
diff --git a/src/hydra-queue-runner/queue-monitor.cc b/src/hydra-queue-runner/queue-monitor.cc
index 26d780b2..2abf3121 100644
--- a/src/hydra-queue-runner/queue-monitor.cc
+++ b/src/hydra-queue-runner/queue-monitor.cc
@@ -511,7 +511,7 @@ Step::ptr State::createStep(ref<Store> destStore,
 
                     StorePathSet closure;
                     localStore->computeFSClosure({*path}, closure);
-                    copyPaths(ref<Store>(localStore), destStore, closure, NoRepair, CheckSigs, NoSubstitute);
+                    copyPaths(*localStore, *destStore, closure, NoRepair, CheckSigs, NoSubstitute);
 
                     time_t stopTime = time(0);