diff --git a/src/internet-stack/ipv4-l3-protocol.h b/src/internet-stack/ipv4-l3-protocol.h
index e3996559c..d56ea3754 100644
--- a/src/internet-stack/ipv4-l3-protocol.h
+++ b/src/internet-stack/ipv4-l3-protocol.h
@@ -241,7 +241,6 @@ private:
   bool m_ipForward;
   L4List_t m_protocols;
   Ipv4InterfaceList m_interfaces;
-  uint32_t m_nInterfaces;
   uint8_t m_defaultTtl;
   uint16_t m_identification;
   Ptr<Node> m_node;