diff --git a/accessible/base/ARIAMap.cpp b/accessible/base/ARIAMap.cpp
index c29d37873c87..48da2d48e973 100644
--- a/accessible/base/ARIAMap.cpp
+++ b/accessible/base/ARIAMap.cpp
@@ -184,7 +184,7 @@ static const nsRoleMapEntry sWAIRoleMaps[] =
     eNoAction,
     eNoLiveAttr,
     eList,
-    kNoReqStates
+    states::READONLY
   },
   { // document
     &nsGkAtoms::document,
diff --git a/accessible/tests/mochitest/states/test_aria.html b/accessible/tests/mochitest/states/test_aria.html
index 7d1ecf650831..1fb19c7c4291 100644
--- a/accessible/tests/mochitest/states/test_aria.html
+++ b/accessible/tests/mochitest/states/test_aria.html
@@ -179,6 +179,9 @@
       testStates("aria_treegrid_readonly_cell_inherited", STATE_READONLY, 0,
                  0, EXT_STATE_EDITABLE);
 
+      // aria-readonly on directory
+      testStates("aria_directory", STATE_READONLY);
+
       // aria-selectable
       testStates("aria_selectable_listitem", STATE_SELECTABLE | STATE_SELECTED);
 
@@ -625,5 +628,8 @@
     <div role="row"><div role="gridcell">h</div></div>
   </div>
 
+  <!-- Test that directory is readonly -->
+  <div id="aria_directory" role="directory"></div>
+
 </body>
 </html>