diff --git a/src/mem/packet.hh b/src/mem/packet.hh
index 515dcc7018..d82ca4f3e0 100644
--- a/src/mem/packet.hh
+++ b/src/mem/packet.hh
@@ -1077,11 +1077,9 @@ class Packet : public Printable
     template <typename T>
     void set(T v, ByteOrder endian);
 
-#if THE_ISA != NULL_ISA
     /** Set the value in the data pointer to v as guest endian. */
     template <typename T>
     void set(T v);
-#endif
 
 
     /**