diff --git a/library/tulip-gui/include/tulip/TulipFontIconEngine.h b/library/tulip-gui/include/tulip/TulipFontIconEngine.h
index 5f2d287b4b..837d157d6c 100644
--- a/library/tulip-gui/include/tulip/TulipFontIconEngine.h
+++ b/library/tulip-gui/include/tulip/TulipFontIconEngine.h
@@ -38,7 +38,11 @@ class TLP_QT_SCOPE TulipFontIconEngine : public QIconEngine {
   TulipFontIconEngine(const TulipFontIconEngine &engine)
       : QIconEngine(), codePoint(engine.codePoint), fontName(engine.fontName) {}
 
+#if (QT_VERSION >= QT_VERSION_CHECK(5, 0, 0))
   TulipFontIconEngine *clone() const override {
+#else
+  TulipFontIconEngine *clone() const {
+#endif
     return new TulipFontIconEngine(*this);
   }