diff --git a/dispatch/dispatch.go b/dispatch/dispatch.go
index b030046d..d62e0b8d 100644
--- a/dispatch/dispatch.go
+++ b/dispatch/dispatch.go
@@ -259,6 +259,7 @@ func (d *Dispatcher) Stop() {
 	}
 	d.mtx.Lock()
 	if d.cancel == nil {
+		d.mtx.Unlock()
 		return
 	}
 	d.cancel()