diff --git a/src/internet-node/l3-protocol.h b/src/internet-node/l3-protocol.h
index d309aca9a..00d780568 100644
--- a/src/internet-node/l3-protocol.h
+++ b/src/internet-node/l3-protocol.h
@@ -31,7 +31,6 @@ namespace ns3 {
 
 class Packet;
 class NetDevice;
-class Node;
 class TraceResolver;
 class TraceContext;