diff --git a/src/mem/ruby/network/simple/Switch.hh b/src/mem/ruby/network/simple/Switch.hh
--- a/src/mem/ruby/network/simple/Switch.hh
+++ b/src/mem/ruby/network/simple/Switch.hh
@@ -45,9 +45,11 @@
 #include "mem/packet.hh"
 #include "mem/ruby/common/TypeDefines.hh"
 #include "mem/ruby/network/BasicRouter.hh"
+#include "mem/ruby/common/TypeDefines.hh"
 #include "params/Switch.hh"
 
 class MessageBuffer;
+class Packet;
 class PerfectSwitch;
 class NetDest;
 class SimpleNetwork;