diff --git a/accessible/ipc/DocAccessibleChild.cpp b/accessible/ipc/DocAccessibleChild.cpp
index 14ada99e47b..c23b6c64166 100644
--- a/accessible/ipc/DocAccessibleChild.cpp
+++ b/accessible/ipc/DocAccessibleChild.cpp
@@ -167,6 +167,18 @@ DocAccessibleChild::RecvValue(const uint64_t& aID, nsString* aValue)
   return true;
 }
 
+bool
+DocAccessibleChild::RecvHelp(const uint64_t& aID, nsString* aHelp)
+{
+  Accessible* acc = IdToAccessible(aID);
+  if (!acc) {
+    return true;
+  }
+
+  acc->Help(*aHelp);
+  return true;
+}
+
 bool
 DocAccessibleChild::RecvDescription(const uint64_t& aID, nsString* aDesc)
 {
diff --git a/accessible/ipc/DocAccessibleChild.h b/accessible/ipc/DocAccessibleChild.h
index 4525776a795..d9cc9421e3a 100644
--- a/accessible/ipc/DocAccessibleChild.h
+++ b/accessible/ipc/DocAccessibleChild.h
@@ -70,6 +70,8 @@ public:
 
   virtual bool RecvValue(const uint64_t& aID, nsString* aValue) override;
 
+  virtual bool RecvHelp(const uint64_t& aID, nsString* aHelp) override;
+
   /*
    * Get the description for the accessible with given id.
    */
diff --git a/accessible/ipc/PDocAccessible.ipdl b/accessible/ipc/PDocAccessible.ipdl
index e2e1ebb14e8..b93c057c2ff 100644
--- a/accessible/ipc/PDocAccessible.ipdl
+++ b/accessible/ipc/PDocAccessible.ipdl
@@ -75,6 +75,7 @@ child:
   prio(high) sync State(uint64_t aID) returns(uint64_t states);
   prio(high) sync Name(uint64_t aID) returns(nsString name);
   prio(high) sync Value(uint64_t aID) returns(nsString value);
+  prio(high) sync Help(uint64_t aID) returns(nsString help);
   prio(high) sync Description(uint64_t aID) returns(nsString desc);
   prio(high) sync Attributes(uint64_t aID) returns(Attribute[] attributes);
   prio(high) sync RelationByType(uint64_t aID, uint32_t aRelationType)
diff --git a/accessible/ipc/ProxyAccessible.cpp b/accessible/ipc/ProxyAccessible.cpp
index 0fd852ae8d2..818e0a8ed38 100644
--- a/accessible/ipc/ProxyAccessible.cpp
+++ b/accessible/ipc/ProxyAccessible.cpp
@@ -95,6 +95,12 @@ ProxyAccessible::Value(nsString& aValue) const
   unused << mDoc->SendValue(mID, &aValue);
 }
 
+void
+ProxyAccessible::Help(nsString& aHelp) const
+{
+  unused << mDoc->SendHelp(mID, &aHelp);
+}
+
 void
 ProxyAccessible::Description(nsString& aDesc) const
 {
diff --git a/accessible/ipc/ProxyAccessible.h b/accessible/ipc/ProxyAccessible.h
index 5d4191a8c0a..62aa50fc722 100644
--- a/accessible/ipc/ProxyAccessible.h
+++ b/accessible/ipc/ProxyAccessible.h
@@ -89,6 +89,11 @@ public:
    */
   void Value(nsString& aValue) const;
 
+  /*
+   * Set aHelp to the help string of the proxied accessible.
+   */
+  void Help(nsString& aHelp) const;
+
   /**
    * Set aDesc to the description of the proxied accessible.
    */
diff --git a/accessible/mac/mozAccessible.mm b/accessible/mac/mozAccessible.mm
index 73b7aaf4bb4..d25d0a2d69d 100644
--- a/accessible/mac/mozAccessible.mm
+++ b/accessible/mac/mozAccessible.mm
@@ -1156,7 +1156,11 @@ struct RoleDescrComparator
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
 
   nsAutoString title;
-  [self getGeckoAccessible]->Name(title);
+  if (AccessibleWrap* accWrap = [self getGeckoAccessible])
+    accWrap->Name(title);
+  else if (ProxyAccessible* proxy = [self getProxyAccessible])
+    proxy->Name(title);
+
   return nsCocoaUtils::ToNSString(title);
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
@@ -1167,7 +1171,11 @@ struct RoleDescrComparator
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
 
   nsAutoString value;
-  [self getGeckoAccessible]->Value(value);
+  if (AccessibleWrap* accWrap = [self getGeckoAccessible])
+    accWrap->Value(value);
+  else if (ProxyAccessible* proxy = [self getProxyAccessible])
+    proxy->Value(value);
+
   return nsCocoaUtils::ToNSString(value);
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
@@ -1213,7 +1221,11 @@ struct RoleDescrComparator
   NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
 
   nsAutoString helpText;
-  [self getGeckoAccessible]->Help(helpText);
+  if (AccessibleWrap* accWrap = [self getGeckoAccessible])
+    accWrap->Help(helpText);
+  else if (ProxyAccessible* proxy = [self getProxyAccessible])
+    proxy->Help(helpText);
+
   return nsCocoaUtils::ToNSString(helpText);
 
   NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
@@ -1259,8 +1271,13 @@ struct RoleDescrComparator
 
 - (BOOL)isEnabled
 {
-  AccessibleWrap* accWrap = [self getGeckoAccessible];
-  return accWrap && ((accWrap->InteractiveState() & states::UNAVAILABLE) == 0);
+  if (AccessibleWrap* accWrap = [self getGeckoAccessible])
+    return ((accWrap->InteractiveState() & states::UNAVAILABLE) == 0);
+
+  if (ProxyAccessible* proxy = [self getProxyAccessible])
+    return ((proxy->State() & states::UNAVAILABLE) == 0);
+
+  return false;
 }
 
 // The root accessible calls this when the focused node was
@@ -1338,7 +1355,7 @@ struct RoleDescrComparator
 
 - (BOOL)isExpired
 {
-  return ![self getGeckoAccessible];
+  return ![self getGeckoAccessible] && ![self getProxyAccessible];
 }
 
 #pragma mark -