2 files changed, 7 insertions, 0 deletions
diff --git a/README b/README
index 47ad2d4..396822f 100644
--- a/README
+++ b/README
@@ -62,6 +62,11 @@ may not work as well..
   http://flex.sourceforge.net/
 
 
+BUILDING OPENSCAD
+================
+
+First, run qmake to generate a Makefile.  Then run make.
+
 DOCUMENTATION
 =============
 
diff --git a/mainwin.cc b/mainwin.cc
index 9b342c9..0b84c07 100644
--- a/mainwin.cc
+++ b/mainwin.cc
@@ -648,7 +648,9 @@ void MainWindow::updateRecentFileActions()
 	int originalNumRecentFiles = files.size();
 	
 	// Remove any duplicate or empty entries from the list
+#if (QT_VERSION >= QT_VERSION_CHECK(4, 5, 0))
 	files.removeDuplicates();
+#endif
 	files.removeAll(QString());
 	// Now remove any entries which do not exist
 	for(int i = files.size()-1; i >= 0; --i) {