diff --git a/e2e_tc.c b/e2e_tc.c
index 3c75fe0..6aaf572 100644
--- a/e2e_tc.c
+++ b/e2e_tc.c
@@ -117,6 +117,7 @@ enum fsm_event e2e_event(struct port *p, int fd_index)
 	case FD_MANNO_TIMER:
 	case FD_SYNC_TX_TIMER:
 	case FD_UNICAST_REQ_TIMER:
+	case FD_UNICAST_SRV_TIMER:
 		pr_err("unexpected timer expiration");
 		return EV_NONE;
 
diff --git a/fd.h b/fd.h
index 215a963..16420d7 100644
--- a/fd.h
+++ b/fd.h
@@ -20,7 +20,7 @@
 #ifndef HAVE_FD_H
 #define HAVE_FD_H
 
-#define N_TIMER_FDS 7
+#define N_TIMER_FDS 8
 
 /*
  * The order matters here.  The DELAY timer must appear before the
@@ -38,6 +38,7 @@ enum {
 	FD_MANNO_TIMER,
 	FD_SYNC_TX_TIMER,
 	FD_UNICAST_REQ_TIMER,
+	FD_UNICAST_SRV_TIMER,
 	FD_RTNL,
 	N_POLLFD,
 };
diff --git a/p2p_tc.c b/p2p_tc.c
index 2562b72..acf9e51 100644
--- a/p2p_tc.c
+++ b/p2p_tc.c
@@ -120,6 +120,7 @@ enum fsm_event p2p_event(struct port *p, int fd_index)
 	case FD_MANNO_TIMER:
 	case FD_SYNC_TX_TIMER:
 	case FD_UNICAST_REQ_TIMER:
+	case FD_UNICAST_SRV_TIMER:
 		pr_err("unexpected timer expiration");
 		return EV_NONE;
 
diff --git a/port.c b/port.c
index 4c4e32d..8b12c3b 100644
--- a/port.c
+++ b/port.c
@@ -2474,6 +2474,10 @@ static enum fsm_event bc_event(struct port *p, int fd_index)
 		port_set_sync_tx_tmo(p);
 		return port_tx_sync(p, NULL) ? EV_FAULT_DETECTED : EV_NONE;
 
+	case FD_UNICAST_SRV_TIMER:
+		pr_debug("port %hu: unicast service timeout", portnum(p));
+		return EV_NONE;
+
 	case FD_UNICAST_REQ_TIMER:
 		pr_debug("port %hu: unicast request timeout", portnum(p));
 		return unicast_client_timer(p) ? EV_FAULT_DETECTED : EV_NONE;