diff --git a/mozilla/accessible/src/base/nsDocAccessible.cpp b/mozilla/accessible/src/base/nsDocAccessible.cpp
index 92f5f515be7..79655e0c8c6 100644
--- a/mozilla/accessible/src/base/nsDocAccessible.cpp
+++ b/mozilla/accessible/src/base/nsDocAccessible.cpp
@@ -201,6 +201,13 @@ NS_IMETHODIMP nsDocAccessible::GetValue(nsAString& aValue)
   return GetURL(aValue);
 }
 
+NS_IMETHODIMP 
+nsDocAccessible::GetDescription(nsAString& aDescription)
+{
+  aDescription.Truncate();
+  return NS_OK;
+}
+
 NS_IMETHODIMP
 nsDocAccessible::GetState(PRUint32 *aState, PRUint32 *aExtraState)
 {
diff --git a/mozilla/accessible/src/base/nsDocAccessible.h b/mozilla/accessible/src/base/nsDocAccessible.h
index 2baf8cd77c6..821875ee35c 100644
--- a/mozilla/accessible/src/base/nsDocAccessible.h
+++ b/mozilla/accessible/src/base/nsDocAccessible.h
@@ -76,6 +76,7 @@ class nsDocAccessible : public nsHyperTextAccessibleWrap,
     NS_IMETHOD GetRole(PRUint32 *aRole);
     NS_IMETHOD GetName(nsAString& aName);
     NS_IMETHOD GetValue(nsAString& aValue);
+    NS_IMETHOD GetDescription(nsAString& aDescription);
     NS_IMETHOD GetState(PRUint32 *aState, PRUint32 *aExtraState);
     NS_IMETHOD GetFocusedChild(nsIAccessible **aFocusedChild);
     NS_IMETHOD GetParent(nsIAccessible **aParent);