diff --git a/src/network/core/tcp.h b/src/network/core/tcp.h
--- a/src/network/core/tcp.h
+++ b/src/network/core/tcp.h
@@ -17,8 +17,6 @@
 #include "address.h"
 #include "packet.h"
 
-#ifdef ENABLE_NETWORK
-
 /** The states of sending the packets. */
 enum SendPacketsState {
 	SPS_CLOSED,      ///< The connection got closed.
@@ -99,6 +97,4 @@ public:
 	static void KillAll();
 };
 
-#endif /* ENABLE_NETWORK */
-
 #endif /* NETWORK_CORE_TCP_H */