diff --git a/schematrons/1.0/auths-affs-warnings.sch b/schematrons/1.0/auths-affs-warnings.sch
index a602dee..6fc8347 100755
--- a/schematrons/1.0/auths-affs-warnings.sch
+++ b/schematrons/1.0/auths-affs-warnings.sch
@@ -54,7 +54,7 @@
   </rule>
 
     <rule context="aff">
-        <assert test="institution" role="info">
+        <assert test="institution or institution-wrap/institution" role="info">
             &lt;aff> does not contain &lt;institution>
         </assert>
     </rule>