diff --git a/src/nix-store/nix-store.cc b/src/nix-store/nix-store.cc
index 048f5c603..25a955e09 100644
--- a/src/nix-store/nix-store.cc
+++ b/src/nix-store/nix-store.cc
@@ -8,6 +8,7 @@
 #include "util.hh"
 #include "serve-protocol.hh"
 #include "worker-protocol.hh"
+#include "monitor-fd.hh"
 
 #include <iostream>
 #include <algorithm>
@@ -879,6 +880,8 @@ static void opServe(Strings opFlags, Strings opArgs)
     FdSource in(STDIN_FILENO);
     FdSink out(STDOUT_FILENO);
 
+    MonitorFdHup monitor(in.fd);
+
     /* Exchange the greeting. */
     unsigned int magic = readInt(in);
     if (magic != SERVE_MAGIC_1) throw Error("protocol mismatch");