diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
index bb2c35c76fd..ec162d88990 100644
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -1509,6 +1509,10 @@ tcp_init(void)
 	tcp_inp_lro_wokeup_queue = counter_u64_alloc(M_WAITOK);
 	tcp_inp_lro_compressed = counter_u64_alloc(M_WAITOK);
 	tcp_inp_lro_locks_taken = counter_u64_alloc(M_WAITOK);
+	tcp_extra_mbuf = counter_u64_alloc(M_WAITOK);
+	tcp_would_have_but = counter_u64_alloc(M_WAITOK);
+	tcp_comp_total = counter_u64_alloc(M_WAITOK);
+	tcp_uncomp_total = counter_u64_alloc(M_WAITOK);
 #ifdef TCPPCAP
 	tcp_pcap_init();
 #endif
diff --git a/sys/netinet/tcp_var.h b/sys/netinet/tcp_var.h
index 7b51afbb42b..1858d0146ce 100644
--- a/sys/netinet/tcp_var.h
+++ b/sys/netinet/tcp_var.h
@@ -1010,6 +1010,10 @@ extern counter_u64_t tcp_inp_lro_direct_queue;
 extern counter_u64_t tcp_inp_lro_wokeup_queue;
 extern counter_u64_t tcp_inp_lro_compressed;
 extern counter_u64_t tcp_inp_lro_locks_taken;
+extern counter_u64_t tcp_extra_mbuf;
+extern counter_u64_t tcp_would_have_but;
+extern counter_u64_t tcp_comp_total;
+extern counter_u64_t tcp_uncomp_total;
 
 #ifdef NETFLIX_EXP_DETECTION
 /* Various SACK attack thresholds */