1 files changed, 2 insertions, 2 deletions

diff --git a/nix/libutil/serialise.cc b/nix/libutil/serialise.cc
index 6f04ab15918..01aeea25c0c 100644
--- a/nix/libutil/serialise.cc
+++ b/nix/libutil/serialise.cc
@@ -188,8 +188,8 @@ void writeString(const string & s, Sink & sink)
 template<class T> void writeStrings(const T & ss, Sink & sink)
 {
     writeInt(ss.size(), sink);
-    foreach (typename T::const_iterator, i, ss)
-        writeString(*i, sink);
+    for (auto& i : ss)
+        writeString(i, sink);
 }
 
 template void writeStrings(const Paths & ss, Sink & sink);