diff --git a/lib/runtime/entry.js b/lib/runtime/entry.js
index 795890b..d5ead0b 100644
--- a/lib/runtime/entry.js
+++ b/lib/runtime/entry.js
@@ -396,6 +396,9 @@ Ep.gatherReadyAsyncParents = function (readyList) {
 
 Ep.setAsyncEvaluation = function () {
   if (this.asyncEvaluationIndex !== null) {
+    if (this.status === 'evaluated') {
+      return;
+    }
     throw new Error('setAsyncEvaluation can only be called once');
   }