--- a/accessible/src/base/ARIAMap.cpp
+++ b/accessible/src/base/ARIAMap.cpp
@@ -221,6 +221,17 @@
     eNoLiveAttr,
     kGenericAccType,
     kNoReqStates
+  },
+  { // key
+    &nsGkAtoms::key,
+    roles::KEY,
+    kUseMapRole,
+    eNoValue,
+    ePressAction,
+    eNoLiveAttr,
+    kGenericAccType,
+    kNoReqStates,
+    eARIAPressed
   },
   { // link
     &nsGkAtoms::link,