diff --git a/fs/session/root.go b/fs/session/root.go
index f530e4b..f4ed3ae 100644
--- a/fs/session/root.go
+++ b/fs/session/root.go
@@ -23,7 +23,7 @@ const eventRingCap = 100
 
 type eventRing struct {
 	mu    sync.Mutex
-	cond  sync.Cond
+	cond  *sync.Cond
 	buf   []string // circular: buf[start%cap]..buf[(start+count-1)%cap]
 	cap   int
 	start int
@@ -31,9 +31,9 @@ type eventRing struct {
 	total int64 // monotonic counter; doubles as stable offset
 }
 
-var evRing = func() eventRing {
-	e := eventRing{cap: eventRingCap, buf: make([]string, eventRingCap)}
-	e.cond.L = &e.mu
+var evRing = func() *eventRing {
+	e := &eventRing{cap: eventRingCap, buf: make([]string, eventRingCap)}
+	e.cond = sync.NewCond(&e.mu)
 	return e
 }()