diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c
index 33ddd3a8540..fc5ce9548bc 100644
--- a/sys/net/if_loop.c
+++ b/sys/net/if_loop.c
@@ -219,7 +219,9 @@ looutput(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
 	if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1);
 	if_inc_counter(ifp, IFCOUNTER_OBYTES, m->m_pkthdr.len);
 
+#ifdef RSS
 	M_HASHTYPE_CLEAR(m);
+#endif
 
 	/* BPF writes need to be handled specially. */
 	if (dst->sa_family == AF_UNSPEC || dst->sa_family == pseudo_AF_HDRCMPLT)