diff --git a/src/corelib/CMakeLists.txt b/src/corelib/CMakeLists.txt
index c0244857ceb..bf24eec2cfb 100644
--- a/src/corelib/CMakeLists.txt
+++ b/src/corelib/CMakeLists.txt
@@ -327,7 +327,6 @@ qt_internal_add_module(Core
         text/qstringconverter.cpp # enum Data
         tools/qcryptographichash.cpp # KeccakNISTInterface/Final
         io/qdebug.cpp # undef qDebug
-        io/qsettings.cpp # Space (also in qjsonparser.cpp)
     NO_PCH_SOURCES
         compat/removed_api.cpp
         global/qsimd.cpp
diff --git a/src/corelib/io/qsettings.cpp b/src/corelib/io/qsettings.cpp
index 81b03c27258..7c439ae6bec 100644
--- a/src/corelib/io/qsettings.cpp
+++ b/src/corelib/io/qsettings.cpp
@@ -1518,6 +1518,8 @@ void QConfFileSettingsPrivate::syncConfFile(QConfFile *confFile)
     }
 }
 
+namespace SettingsImpl {
+
 enum { Space = 0x1, Special = 0x2 };
 
 static const char charTraits[256] =
@@ -1544,10 +1546,15 @@ static const char charTraits[256] =
     0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
 };
 
+} // namespace SettingsImpl
+
+using SettingsImpl::charTraits;
+
 bool QConfFileSettingsPrivate::readIniLine(QByteArrayView data, qsizetype &dataPos,
                                            qsizetype &lineStart, qsizetype &lineLen,
                                            qsizetype &equalsPos)
 {
+    using namespace SettingsImpl;
     qsizetype dataLen = data.size();
     bool inQuotes = false;