diff --git a/akka-cluster/src/test/scala/akka/cluster/routing/WeightedRouteesSpec.scala b/akka-cluster/src/test/scala/akka/cluster/routing/WeightedRouteesSpec.scala
index f8fb48417b..f34b81c5ec 100644
--- a/akka-cluster/src/test/scala/akka/cluster/routing/WeightedRouteesSpec.scala
+++ b/akka-cluster/src/test/scala/akka/cluster/routing/WeightedRouteesSpec.scala
@@ -40,7 +40,10 @@ class WeightedRouteesSpec extends AkkaSpec(ConfigFactory.parseString("""
 
     "check boundaries" in {
       val empty = new WeightedRoutees(Vector(), a1, Map.empty)
-      empty.total must be(0)
+      empty.isEmpty must be(true)
+      intercept[IllegalArgumentException] {
+        empty.total
+      }
       val weighted = new WeightedRoutees(Vector(refA, refB, refC), a1, Map.empty)
       weighted.total must be(3)
       intercept[IllegalArgumentException] {