diff --git a/src/laybasic/laybasic/layNetlistBrowserModel.cc b/src/laybasic/laybasic/layNetlistBrowserModel.cc
index ccc3e7ed3..b69e2375a 100644
--- a/src/laybasic/laybasic/layNetlistBrowserModel.cc
+++ b/src/laybasic/laybasic/layNetlistBrowserModel.cc
@@ -31,7 +31,9 @@
 #include <QWidget>
 #include <QTreeView>
 #include <QUrl>
-#include <QUrlQuery>
+#if QT_VERSION >= 0x050000
+#  include <QUrlQuery>
+#endif
 
 namespace lay
 {