diff --git a/src/corelib/text/qstringbuilder.h b/src/corelib/text/qstringbuilder.h
index 288d98d633..49f316a1f9 100644
--- a/src/corelib/text/qstringbuilder.h
+++ b/src/corelib/text/qstringbuilder.h
@@ -126,8 +126,8 @@ private:
     }
 
     typedef QConcatenable<QStringBuilder<A, B> > Concatenable;
-    typedef typename Concatenable::ConvertTo ConvertTo;
 public:
+    typedef typename Concatenable::ConvertTo ConvertTo;
     operator ConvertTo() const { return convertTo<ConvertTo>(); }
 
     int size() const { return Concatenable::size(*this); }