diff --git a/lib/HALSim/src/Network.h b/lib/HALSim/src/Network.h
index 16fed0c9..4b412057 100644
--- a/lib/HALSim/src/Network.h
+++ b/lib/HALSim/src/Network.h
@@ -101,7 +101,7 @@ class Network : public INetwork
      *
      * @return IP address if available, otherwise IPAddr(), which is 0.0.0.0.
      */
-    IPAddress getIp() const;
+    IPAddress getIp() const final;
 
 private:
     /** Network Service States. */