diff --git a/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp b/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp
index 81995510f0..0f4adca6f7 100644
--- a/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp
+++ b/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase.cpp
@@ -68,6 +68,8 @@
 #define JapaneseCsbBit 17
 #define KoreanCsbBit 21
 
+QT_BEGIN_NAMESPACE
+
 static inline bool requiresOpenType(int writingSystem)
 {
     return ((writingSystem >= QFontDatabase::Syriac && writingSystem <= QFontDatabase::Sinhala)
@@ -734,3 +736,5 @@ QFont QFontconfigDatabase::defaultFont() const
 {
     return QFont(resolveFontFamilyAlias(QString()));
 }
+
+QT_END_NAMESPACE
diff --git a/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase_p.h b/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase_p.h
index af981d431f..ecf2d4da49 100644
--- a/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase_p.h
+++ b/src/platformsupport/fontdatabases/fontconfig/qfontconfigdatabase_p.h
@@ -45,6 +45,8 @@
 #include <QPlatformFontDatabase>
 #include <QtPlatformSupport/private/qbasicfontdatabase_p.h>
 
+QT_BEGIN_NAMESPACE
+
 class QFontconfigDatabase : public QBasicFontDatabase
 {
 public:
@@ -56,4 +58,6 @@ public:
     QFont defaultFont() const;
 };
 
+QT_END_NAMESPACE
+
 #endif // QFONTCONFIGDATABASE_H