diff --git a/cmd-find.c b/cmd-find.c
index 87ca7310..2d3adf40 100644
--- a/cmd-find.c
+++ b/cmd-find.c
@@ -82,6 +82,7 @@ cmd_find_try_TMUX(struct client *c)
 	char			 tmp[256];
 	long long		 pid;
 	u_int			 session;
+	struct session		*s;
 
 	envent = environ_find(c->environ, "TMUX");
 	if (envent == NULL)
@@ -91,8 +92,13 @@ cmd_find_try_TMUX(struct client *c)
 		return (NULL);
 	if (pid != getpid())
 		return (NULL);
-	log_debug("client %p TMUX %s (session @%u)", c, envent->value, session);
-	return (session_find_by_id(session));
+	log_debug("%s: client %p TMUX %s (session $%u)", __func__, c,
+	    envent->value, session);
+
+	s = session_find_by_id(session);
+	if (s != NULL)
+		log_debug("%s: session $%u still exists", __func__, s->id);
+	return (s);
 }
 
 /* Find pane containing client if any. */
@@ -108,6 +114,8 @@ cmd_find_inside_pane(struct client *c)
 		if (strcmp(wp->tty, c->ttyname) == 0)
 			break;
 	}
+	if (wp != NULL)
+		log_debug("%s: got pane %%%u (%s)", __func__, wp->id, wp->tty);
 	return (wp);
 }
 
@@ -166,6 +174,8 @@ cmd_find_best_session(struct session **slist, u_int ssize, int flags)
 	struct session	 *s_loop, *s;
 	u_int		  i;
 
+	log_debug("%s: %u sessions to try", __func__, ssize);
+
 	s = NULL;
 	if (slist != NULL) {
 		for (i = 0; i < ssize; i++) {
@@ -189,6 +199,8 @@ cmd_find_best_session_with_window(struct cmd_find_state *fs)
 	u_int		  ssize;
 	struct session	 *s;
 
+	log_debug("%s: window is @%u", __func__, fs->w->id);
+
 	ssize = 0;
 	RB_FOREACH(s, sessions, &sessions) {
 		if (!session_has(s, fs->w))
@@ -218,6 +230,8 @@ cmd_find_best_winlink_with_window(struct cmd_find_state *fs)
 {
 	struct winlink	 *wl, *wl_loop;
 
+	log_debug("%s: window is @%u", __func__, fs->w->id);
+
 	wl = NULL;
 	if (fs->s->curw != NULL && fs->s->curw->window == fs->w)
 		wl = fs->s->curw;
@@ -705,7 +719,7 @@ void
 cmd_find_log_state(const char *prefix, struct cmd_find_state *fs)
 {
 	if (fs->s != NULL)
-		log_debug("%s: s=$%u", prefix, fs->s->id);
+		log_debug("%s: s=$%u %s", prefix, fs->s->id, fs->s->name);
 	else
 		log_debug("%s: s=none", prefix);
 	if (fs->wl != NULL) {
@@ -894,6 +908,9 @@ cmd_find_from_client(struct cmd_find_state *fs, struct client *c, int flags)
 				break;
 		}
 		if (wl != NULL) {
+			log_debug("%s: session $%u has pane %%%u", __func__,
+			    s->id, wp->id);
+
 			fs->s = s;
 			fs->wl = s->curw; /* use current session */
 			fs->w = fs->wl->window;
diff --git a/session.c b/session.c
index 5b17f085..95cbe3e6 100644
--- a/session.c
+++ b/session.c
@@ -290,9 +290,10 @@ session_update_activity(struct session *s, struct timeval *from)
 	else
 		memcpy(&s->activity_time, from, sizeof s->activity_time);
 
-	log_debug("session %s activity %lld.%06d (last %lld.%06d)", s->name,
-	    (long long)s->activity_time.tv_sec, (int)s->activity_time.tv_usec,
-	    (long long)last->tv_sec, (int)last->tv_usec);
+	log_debug("session $%u %s activity %lld.%06d (last %lld.%06d)", s->id,
+	    s->name, (long long)s->activity_time.tv_sec,
+	    (int)s->activity_time.tv_usec, (long long)last->tv_sec,
+	    (int)last->tv_usec);
 
 	if (evtimer_initialized(&s->lock_timer))
 		evtimer_del(&s->lock_timer);