diff --git a/src/Scripting/NasalSys.cxx b/src/Scripting/NasalSys.cxx
index 536fee391..ce351758a 100644
--- a/src/Scripting/NasalSys.cxx
+++ b/src/Scripting/NasalSys.cxx
@@ -510,7 +510,7 @@ struct SimNasalLogFileLine : SGPropertyChangeListener
         SGPropertyNode* node = fgGetNode("/sim/nasal-log-file-line", true /*create*/);
         node->addChangeListener(this, true /*initial*/);
     }
-    virtual void valueChanged(SGPropertyNode* node) {
+    void valueChanged(SGPropertyNode* node) override {
         _file_line = node->getIntValue();
     }