diff --git a/src/common/packet-printer.h b/src/common/packet-printer.h
index c79be0a3b..0c2873785 100644
--- a/src/common/packet-printer.h
+++ b/src/common/packet-printer.h
@@ -26,10 +26,6 @@
 #include "buffer.h"
 #include <vector>
 
-namespace {
-  class ItemList;
-}
-
 namespace ns3 {
 
 class Chunk;