diff --git a/src/net/tools/naive/naive_proxy_bin.cc b/src/net/tools/naive/naive_proxy_bin.cc
index 4ba08712dd..60b86f5b2e 100644
--- a/src/net/tools/naive/naive_proxy_bin.cc
+++ b/src/net/tools/naive/naive_proxy_bin.cc
@@ -438,8 +438,8 @@ std::unique_ptr<URLRequestContext> BuildURLRequestContext(
     if (proxy_url.compare(0, 7, "quic://") == 0) {
       proxy_url.replace(0, 4, "https");
       auto* quic = context->quic_context()->params();
-      quic->supported_versions.assign(quic::SupportedVersions().begin(),
-                                      quic::SupportedVersions().end());
+      const auto& versions = quic::SupportedVersions();
+      quic->supported_versions.assign(versions.begin(), versions.end());
       quic->origins_to_force_quic_on.insert(
           net::HostPortPair::FromURL(GURL(proxy_url)));
     }