--- seamonkey-2.53.14/extensions/spellcheck/src/mozSpellChecker.h.orig	2020-02-18 00:37:50.000000000 +0100
+++ seamonkey-2.53.14/extensions/spellcheck/src/mozSpellChecker.h	2022-11-27 07:17:16.420656526 +0100
@@ -17,7 +17,6 @@
 #include "nsTArray.h"
 #include "mozISpellI18NUtil.h"
 #include "nsCycleCollectionParticipant.h"
-#include "RemoteSpellCheckEngineChild.h"
 
 namespace mozilla {
 class RemoteSpellcheckEngineChild;
--- seamonkey-2.53.14/extensions/spellcheck/src/mozSpellChecker.cpp.orig	2020-02-18 00:37:50.000000000 +0100
+++ seamonkey-2.53.14/extensions/spellcheck/src/mozSpellChecker.cpp	2022-11-26 15:23:46.187257633 +0100
@@ -13,6 +13,7 @@
 #include "mozilla/PRemoteSpellcheckEngineChild.h"
 #include "mozilla/dom/ContentChild.h"
 #include "nsXULAppAPI.h"
+#include "RemoteSpellCheckEngineChild.h"
 
 using mozilla::dom::ContentChild;
 using mozilla::GenericPromise;