diff --git a/testing/tests/regression-suite/0525-iCal-PROPFIND.result b/testing/tests/regression-suite/0525-iCal-PROPFIND.result
index 68d15a69..7f95c067 100644
--- a/testing/tests/regression-suite/0525-iCal-PROPFIND.result
+++ b/testing/tests/regression-suite/0525-iCal-PROPFIND.result
@@ -2,8 +2,8 @@ HTTP/1.1 207 Multi-Status
 Date: Dow, 01 Jan 2000 00:00:00 GMT
 DAV: 1, 2, 3, access-control, calendar-access, calendar-schedule
 DAV: extended-mkcol, bind, addressbook, calendar-auto-schedule, calendar-proxy
-ETag: "d5cc88f137d733e311ab4e4f73e88ed8"
-Content-Length: 1357
+ETag: "87bca499488e3f4a217d3c2585b17ad5"
+Content-Length: 1459
 Content-Type: text/xml; charset="utf-8"
 
 <?xml version="1.0" encoding="utf-8" ?>
@@ -18,6 +18,10 @@ Content-Type: text/xml; charset="utf-8"
      <collection/>
      <C:calendar-proxy-read/>
     </resourcetype>
+    <group-member-set>
+     <href>/caldav.php/user1/</href>
+     <href>/caldav.php/assistant1/</href>
+    </group-member-set>
     <group-membership>
      <href>/caldav.php/assistant1/</href>
      <href>/caldav.php/teamclient1/</href>
@@ -40,7 +44,6 @@ Content-Type: text/xml; charset="utf-8"
   <propstat>
    <prop>
     <C1:calendar-description/>
-    <group-member-set/>
    </prop>
    <status>HTTP/1.1 404 Not Found</status>
   </propstat>
diff --git a/testing/tests/regression-suite/0549-iCal-REPORT.result b/testing/tests/regression-suite/0549-iCal-REPORT.result
new file mode 100644
index 00000000..1839a202
--- /dev/null
+++ b/testing/tests/regression-suite/0549-iCal-REPORT.result
@@ -0,0 +1,47 @@
+HTTP/1.1 207 Multi-Status
+Date: Dow, 01 Jan 2000 00:00:00 GMT
+DAV: 1, 2, 3, access-control, calendar-access, calendar-schedule
+DAV: extended-mkcol, bind, addressbook, calendar-auto-schedule, calendar-proxy
+ETag: "ef355f1b27cdb05f1465aeb58f9d1baa"
+Content-Length: 1120
+Content-Type: text/xml; charset="utf-8"
+
+<?xml version="1.0" encoding="utf-8" ?>
+<multistatus xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav">
+ <response>
+  <href>/caldav.php/resource1/calendar-proxy-read/</href>
+  <propstat>
+   <prop>
+    <group-member-set>
+     <response>
+      <href>/caldav.php/user1/</href>
+      <propstat>
+       <prop>
+        <displayname>User 1</displayname>
+        <C:calendar-user-address-set>
+         <href>mailto:user1@example.net</href>
+         <href>/caldav.php/user1/</href>
+        </C:calendar-user-address-set>
+       </prop>
+       <status>HTTP/1.1 200 OK</status>
+      </propstat>
+     </response>
+     <response>
+      <href>/caldav.php/assistant1/</href>
+      <propstat>
+       <prop>
+        <displayname>Assistant 1</displayname>
+        <C:calendar-user-address-set>
+         <href>mailto:assistant1@example.net</href>
+         <href>/caldav.php/assistant1/</href>
+        </C:calendar-user-address-set>
+       </prop>
+       <status>HTTP/1.1 200 OK</status>
+      </propstat>
+     </response>
+    </group-member-set>
+   </prop>
+   <status>HTTP/1.1 200 OK</status>
+  </propstat>
+ </response>
+</multistatus>
diff --git a/testing/tests/regression-suite/0549-iCal-REPORT.test b/testing/tests/regression-suite/0549-iCal-REPORT.test
new file mode 100644
index 00000000..2d227802
--- /dev/null
+++ b/testing/tests/regression-suite/0549-iCal-REPORT.test
@@ -0,0 +1,25 @@
+#
+# check group-member-set on /user/calendar-proxy-read/
+# (look up the principals that have been delegated read access to this user)
+# and return a minimal result (excluding the 404s on unsupported email-address-set)
+#
+TYPE=REPORT
+URL=http://mycaldav/caldav.php/resource1/calendar-proxy-read/
+HEAD
+
+AUTH=manager1:manager1
+
+HEADER=Content-Type: text/xml
+HEADER=Prefer: return=minimal
+HEADER=User-Agent: Mac+OS+X/10.11.4 (15E65) CalendarAgent/361.2
+
+BEGINDATA
+<?xml version="1.0" encoding="UTF-8"?>
+<A:expand-property xmlns:A="DAV:">
+  <A:property name="group-member-set" namespace="DAV:">
+    <A:property name="displayname" namespace="DAV:"/>
+    <A:property name="calendar-user-address-set" namespace="urn:ietf:params:xml:ns:caldav"/>
+    <A:property name="email-address-set" namespace="http://calendarserver.org/ns/"/>
+  </A:property>
+</A:expand-property>
+ENDDATA