diff --git a/src/jsontestrunner/main.cpp b/src/jsontestrunner/main.cpp
index dba943b..1ec1fb6 100644
--- a/src/jsontestrunner/main.cpp
+++ b/src/jsontestrunner/main.cpp
@@ -185,7 +185,7 @@
     Json::Value const& root)
 {
   Json::StreamWriterBuilder builder;
-  return writeString(root, builder);
+  return Json::writeString(builder, root);
 }
 static int rewriteValueTree(
     const std::string& rewritePath,
diff --git a/src/lib_json/json_writer.cpp b/src/lib_json/json_writer.cpp
index 44aa9ec..2ccfcba 100644
--- a/src/lib_json/json_writer.cpp
+++ b/src/lib_json/json_writer.cpp
@@ -1005,10 +1005,10 @@
       colonSymbol, nullSymbol, endingLineFeedSymbol);
 }
 
-std::string writeString(Value const& root, StreamWriter::Factory const& builder) {
+std::string writeString(StreamWriter::Factory const& builder, Value const& root) {
   std::ostringstream sout;
-  StreamWriterPtr const sw(builder.newStreamWriter(&sout));
-  sw->write(root);
+  StreamWriterPtr const writer(builder.newStreamWriter(&sout));
+  writer->write(root);
   return sout.str();
 }