diff --git a/lib/router.go b/lib/router.go
index 042764d0..3e720274 100644
--- a/lib/router.go
+++ b/lib/router.go
@@ -238,11 +238,11 @@ func (rt *Router) reloadRoutes(db *mgo.Database, currentOptime bson.MongoTimesta
 
 	rt.lock.Lock()
 	rt.mux = newmux
+	routeCount := rt.mux.RouteCount()
 	rt.lock.Unlock()
 
-	logInfo(fmt.Sprintf("router: reloaded %d routes", rt.mux.RouteCount()))
-
-	routesCountMetric.Set(float64(rt.mux.RouteCount()))
+	logInfo(fmt.Sprintf("router: reloaded %d routes", routeCount))
+	routesCountMetric.Set(float64(routeCount))
 }
 
 func (rt *Router) getCurrentMongoInstance(db mongoDatabase) (MongoReplicaSetMember, error) {