1 files changed, 1 insertions, 2 deletions
diff --git a/src/libstore/worker-protocol.hh b/src/libstore/worker-protocol.hh
index 9fb6d63e0..315e982dd 100644
--- a/src/libstore/worker-protocol.hh
+++ b/src/libstore/worker-protocol.hh
@@ -87,10 +87,9 @@ struct WorkerProto
      * canonical serializers below.
      */
     struct WriteConn {
-        Sink & to;
         Version version;
 
-        WriteConn(Sink & to, Version version) : to(to), version(version) {
+        explicit WriteConn(Version version) : version(version) {
             assert(version >= MIN_SUPPORTED_WORKER_PROTO_VERSION);
         }
     };