2 files changed, 2 insertions, 3 deletions
diff --git a/src/libstore/daemon.cc b/src/libstore/daemon.cc
index 6d64644d1..cdc9c09c7 100644
--- a/src/libstore/daemon.cc
+++ b/src/libstore/daemon.cc
@@ -160,8 +160,7 @@ struct TunnelSink : Sink
     TunnelSink(Sink & to) : to(to) { }
     void operator () (std::string_view data)
     {
-        to << STDERR_WRITE;
-        writeString(data, to);
+        to << STDERR_WRITE << data;
     }
 };
 
diff --git a/src/libstore/remote-store.cc b/src/libstore/remote-store.cc
index b2f8a285d..55a71f502 100644
--- a/src/libstore/remote-store.cc
+++ b/src/libstore/remote-store.cc
@@ -897,7 +897,7 @@ std::exception_ptr RemoteStore::Connection::processStderr(Sink * sink, Source *
             if (!source) throw Error("no source");
             size_t len = readNum<size_t>(from);
             auto buf = std::make_unique<char[]>(len);
-            writeString({(const char *) buf.get(), source->read(buf.get(), len)}, to);
+            to << std::string_view((const char *) buf.get(), source->read(buf.get(), len));
             to.flush();
         }