diff --git a/src/corelib/text/qstringtokenizer.h b/src/corelib/text/qstringtokenizer.h
index 532724306ee..3925054580d 100644
--- a/src/corelib/text/qstringtokenizer.h
+++ b/src/corelib/text/qstringtokenizer.h
@@ -113,9 +113,9 @@ QT_END_INCLUDE_NAMESPACE
 namespace QtPrivate {
 namespace Tok {
 
-    constexpr qsizetype size(QChar) noexcept { return 1; }
+    constexpr qsizetype tokenSize(QChar) noexcept { return 1; }
     template <typename String>
-    constexpr qsizetype size(const String &s) noexcept { return static_cast<qsizetype>(s.size()); }
+    constexpr qsizetype tokenSize(const String &s) noexcept { return static_cast<qsizetype>(s.size()); }
 
     template <typename String> struct ViewForImpl {};
     template <> struct ViewForImpl<QStringView>   { using type = QStringView; };
@@ -386,7 +386,7 @@ auto QStringTokenizerBase<Haystack, Needle>::next(tokenizer_state state) const n
         if (state.end >= 0) {
             // token separator found => return intermediate element:
             result = m_haystack.sliced(state.start, state.end - state.start);
-            const auto ns = QtPrivate::Tok::size(m_needle);
+            const auto ns = QtPrivate::Tok::tokenSize(m_needle);
             state.start = state.end + ns;
             state.extra = (ns == 0 ? 1 : 0);
         } else {