diff --git a/accessible/ipc/RemoteAccessibleShared.h b/accessible/ipc/RemoteAccessibleShared.h
index 11af803ecae8..c4372ec58495 100644
--- a/accessible/ipc/RemoteAccessibleShared.h
+++ b/accessible/ipc/RemoteAccessibleShared.h
@@ -208,7 +208,6 @@ nsIntRect BoundsInCSSPixels();
 void Language(nsString& aLocale);
 void DocType(nsString& aType);
 void Title(nsString& aTitle);
-void URL(nsString& aURL);
 void MimeType(nsString aMime);
 void URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
                         nsString& aMimeType);
diff --git a/accessible/ipc/other/DocAccessibleChild.cpp b/accessible/ipc/other/DocAccessibleChild.cpp
index 69bb68afe6e5..84ed4ad7db31 100644
--- a/accessible/ipc/other/DocAccessibleChild.cpp
+++ b/accessible/ipc/other/DocAccessibleChild.cpp
@@ -1520,16 +1520,6 @@ mozilla::ipc::IPCResult DocAccessibleChild::RecvTitle(const uint64_t& aID,
   return IPC_OK();
 }
 
-mozilla::ipc::IPCResult DocAccessibleChild::RecvURL(const uint64_t& aID,
-                                                    nsString* aURL) {
-  LocalAccessible* acc = IdToAccessible(aID);
-  if (acc && acc->IsDoc()) {
-    acc->AsDoc()->URL(*aURL);
-  }
-
-  return IPC_OK();
-}
-
 mozilla::ipc::IPCResult DocAccessibleChild::RecvMimeType(const uint64_t& aID,
                                                          nsString* aMime) {
   LocalAccessible* acc = IdToAccessible(aID);
diff --git a/accessible/ipc/other/DocAccessibleChild.h b/accessible/ipc/other/DocAccessibleChild.h
index bfc482b76852..1b8d962e7223 100644
--- a/accessible/ipc/other/DocAccessibleChild.h
+++ b/accessible/ipc/other/DocAccessibleChild.h
@@ -432,8 +432,6 @@ class DocAccessibleChild : public DocAccessibleChildBase {
                                               nsString* aType) override;
   virtual mozilla::ipc::IPCResult RecvTitle(const uint64_t& aID,
                                             nsString* aTitle) override;
-  virtual mozilla::ipc::IPCResult RecvURL(const uint64_t& aID,
-                                          nsString* aURL) override;
   virtual mozilla::ipc::IPCResult RecvMimeType(const uint64_t& aID,
                                                nsString* aMime) override;
   virtual mozilla::ipc::IPCResult RecvURLDocTypeMimeType(
diff --git a/accessible/ipc/other/PDocAccessible.ipdl b/accessible/ipc/other/PDocAccessible.ipdl
index e37b6228809c..a2c0be9a1838 100644
--- a/accessible/ipc/other/PDocAccessible.ipdl
+++ b/accessible/ipc/other/PDocAccessible.ipdl
@@ -332,7 +332,6 @@ child:
   [Nested=inside_sync] sync Language(uint64_t aID) returns(nsString aLocale);
   [Nested=inside_sync] sync DocType(uint64_t aID) returns(nsString aType);
   [Nested=inside_sync] sync Title(uint64_t aID) returns(nsString aTitle);
-  [Nested=inside_sync] sync URL(uint64_t aID) returns(nsString aURL);
   [Nested=inside_sync] sync MimeType(uint64_t aID) returns(nsString aMime);
   [Nested=inside_sync] sync URLDocTypeMimeType(uint64_t aID) returns(nsString aURL, nsString aDocType, nsString aMimeType);
 
diff --git a/accessible/ipc/other/RemoteAccessible.cpp b/accessible/ipc/other/RemoteAccessible.cpp
index 2ff3bf2ec053..81786bb9ab67 100644
--- a/accessible/ipc/other/RemoteAccessible.cpp
+++ b/accessible/ipc/other/RemoteAccessible.cpp
@@ -1007,10 +1007,6 @@ void RemoteAccessible::Title(nsString& aTitle) {
   Unused << mDoc->SendTitle(mID, &aTitle);
 }
 
-void RemoteAccessible::URL(nsString& aURL) {
-  Unused << mDoc->SendURL(mID, &aURL);
-}
-
 void RemoteAccessible::MimeType(nsString aMime) {
   Unused << mDoc->SendMimeType(mID, &aMime);
 }
diff --git a/ipc/ipdl/sync-messages.ini b/ipc/ipdl/sync-messages.ini
index eafd3daa549e..50e758b69f0a 100644
--- a/ipc/ipdl/sync-messages.ini
+++ b/ipc/ipdl/sync-messages.ini
@@ -598,9 +598,6 @@ platform = notwin
 [PDocAccessible::Title]
 description = Legacy a11y IPC
 platform = notwin
-[PDocAccessible::URL]
-description = Legacy a11y IPC
-platform = notwin
 [PDocAccessible::MimeType]
 description = Legacy a11y IPC
 platform = notwin