diff --git a/spec.html b/spec.html
index fe6d80cbfb..ea15cb07e5 100644
--- a/spec.html
+++ b/spec.html
@@ -6163,7 +6163,7 @@ <h1>CreateRealm ( )</h1>
       <p>The abstract operation CreateRealm with no arguments performs the following steps:</p>
       <emu-alg>
         1. Let _realmRec_ be a new Realm Record.
-        1. Perform CreateIntrinsics(_realmRec_).
+        1. If the host requires use of an existing Realm Record's intrinsics to serve as _realmRec_'s intrinsics, let _realmRec_.[[Intrinsics]] be assigned in an implementation-defined manner to an existing Realm Record's intrinsics record. Otherwise, perform CreateIntrinsics(_realmRec_).
         1. Set _realmRec_.[[GlobalObject]] to *undefined*.
         1. Set _realmRec_.[[GlobalEnv]] to *undefined*.
         1. Set _realmRec_.[[TemplateMap]] to a new empty List.