diff --git a/src/libs/utils/theme/theme.cpp b/src/libs/utils/theme/theme.cpp
index 1b7ccee0b60..3f3fa7370fa 100644
--- a/src/libs/utils/theme/theme.cpp
+++ b/src/libs/utils/theme/theme.cpp
@@ -33,11 +33,6 @@ Theme *creatorTheme()
     return m_creatorTheme;
 }
 
-Theme *proxyTheme()
-{
-    return new Theme(m_creatorTheme);
-}
-
 // Convenience
 QColor creatorColor(Theme::Color role)
 {
diff --git a/src/libs/utils/theme/theme.h b/src/libs/utils/theme/theme.h
index 9508cfd7aeb..7ac892cf1cd 100644
--- a/src/libs/utils/theme/theme.h
+++ b/src/libs/utils/theme/theme.h
@@ -576,13 +576,11 @@ protected:
 private:
     void readSettingsInternal(QSettings &settings);
     friend QTCREATOR_UTILS_EXPORT Theme *creatorTheme();
-    friend QTCREATOR_UTILS_EXPORT Theme *proxyTheme();
     QColor readNamedColorNoWarning(const QString &color) const;
     QPair<QColor, QString> readNamedColor(const QString &color) const;
 };
 
 QTCREATOR_UTILS_EXPORT Theme *creatorTheme();
-QTCREATOR_UTILS_EXPORT Theme *proxyTheme();
 QTCREATOR_UTILS_EXPORT QColor creatorColor(Theme::Color role);
 
 } // namespace Utils