diff --git a/src/corelib/text/qlocale_win.cpp b/src/corelib/text/qlocale_win.cpp
index f97d9104517..89a8af497af 100644
--- a/src/corelib/text/qlocale_win.cpp
+++ b/src/corelib/text/qlocale_win.cpp
@@ -1072,8 +1072,8 @@ static QString winIso639LangName(LCID id)
     if (!lang_code.isEmpty()) {
         const char *endptr;
         bool ok;
-        QByteArray latin1_lang_code = std::move(lang_code).toLatin1();
-        int i = qstrntoull(latin1_lang_code.data(), latin1_lang_code.size(), &endptr, 16, &ok);
+        const QByteArray latin1 = std::move(lang_code).toLatin1();
+        const auto i = qstrntoull(latin1.data(), latin1.size(), &endptr, 16, &ok);
         if (ok && *endptr == '\0') {
             switch (i) {
                 case 0x814: