diff --git a/lib/sync/sync.go b/lib/sync/sync.go
index 79c8ff18..942cfcdb 100644
--- a/lib/sync/sync.go
+++ b/lib/sync/sync.go
@@ -85,7 +85,6 @@ func (h holder) String() string {
 
 type loggedMutex struct {
 	sync.Mutex
-	start  time.Time
 	holder atomic.Value
 }