1 files changed, 1 insertions, 1 deletions
diff --git a/src/libexpr/tests/json.cc b/src/libexpr/tests/json.cc
index 411bc0ac3..7586bdd9b 100644
--- a/src/libexpr/tests/json.cc
+++ b/src/libexpr/tests/json.cc
@@ -8,7 +8,7 @@ namespace nix {
         protected:
             std::string getJSONValue(Value& value) {
                 std::stringstream ss;
-                PathSet ps;
+                NixStringContext ps;
                 printValueAsJSON(state, true, value, noPos, ss, ps);
                 return ss.str();
             }