diff --git a/src/node_report.cc b/src/node_report.cc
index 8a257b0c9c6ef4..d917a772812b27 100644
--- a/src/node_report.cc
+++ b/src/node_report.cc
@@ -231,7 +231,7 @@ static void WriteNodeReport(Isolate* isolate,
   // Report out the command line.
   if (!node::per_process::cli_options->cmdline.empty()) {
     writer.json_arraystart("commandLine");
-    for (std::string arg : node::per_process::cli_options->cmdline) {
+    for (const std::string& arg : node::per_process::cli_options->cmdline) {
       writer.json_element(arg);
     }
     writer.json_arrayend();