diff --git a/editor/composer/nsEditorSpellCheck.cpp b/editor/composer/nsEditorSpellCheck.cpp
index 7efc6a140c50..d96dc83a1cfa 100644
--- a/editor/composer/nsEditorSpellCheck.cpp
+++ b/editor/composer/nsEditorSpellCheck.cpp
@@ -635,34 +635,6 @@ nsEditorSpellCheck::SetCurrentDictionary(const nsAString& aDictionary)
   return mSpellChecker->SetCurrentDictionary(aDictionary);
 }
 
-NS_IMETHODIMP
-nsEditorSpellCheck::CheckCurrentDictionary()
-{
-  mSpellChecker->CheckCurrentDictionary();
-
-  // Check if our current dictionary is still available.
-  nsAutoString currentDictionary;
-  nsresult rv = GetCurrentDictionary(currentDictionary);
-  if (NS_SUCCEEDED(rv) && !currentDictionary.IsEmpty()) {
-    return NS_OK;
-  }
-
-  // If our preferred current dictionary has gone, pick another one.
-  nsTArray<nsString> dictList;
-  rv = mSpellChecker->GetDictionaryList(&dictList);
-  NS_ENSURE_SUCCESS(rv, rv);
-
-  if (dictList.Length() > 0) {
-    // Use RAII object to prevent content preferences being written during
-    // this call.
-    UpdateDictionaryHolder holder(this);
-    rv = SetCurrentDictionary(dictList[0]);
-    NS_ENSURE_SUCCESS(rv, rv);
-  }
-
-  return NS_OK;
-}
-
 NS_IMETHODIMP
 nsEditorSpellCheck::UninitSpellChecker()
 {
@@ -835,6 +807,14 @@ nsEditorSpellCheck::DictionaryFetched(DictionaryFetcher* aFetcher)
 #endif
   }
 
+  // Auxiliary status.
+  nsresult rv2;
+
+  // We obtain a list of available dictionaries.
+  nsTArray<nsString> dictList;
+  rv2 = mSpellChecker->GetDictionaryList(&dictList);
+  NS_ENSURE_SUCCESS(rv2, rv2);
+
   // Priority 1:
   // If we successfully fetched a dictionary from content prefs, do not go
   // further. Use this exact dictionary.
@@ -845,7 +825,7 @@ nsEditorSpellCheck::DictionaryFetched(DictionaryFetcher* aFetcher)
   if (!(flags & nsIPlaintextEditor::eEditorMailMask)) {
     dictName.Assign(aFetcher->mDictionary);
     if (!dictName.IsEmpty()) {
-      if (NS_SUCCEEDED(SetCurrentDictionary(dictName))) {
+      if (NS_SUCCEEDED(TryDictionary(dictName, dictList, DICT_NORMAL_COMPARE))) {
 #ifdef DEBUG_DICT
         printf("***** Assigned from content preferences |%s|\n",
                NS_ConvertUTF16toUTF8(dictName).get());
@@ -871,14 +851,6 @@ nsEditorSpellCheck::DictionaryFetched(DictionaryFetcher* aFetcher)
          NS_ConvertUTF16toUTF8(dictName).get());
 #endif
 
-  // Auxiliary status.
-  nsresult rv2;
-
-  // We obtain a list of available dictionaries.
-  nsTArray<nsString> dictList;
-  rv2 = mSpellChecker->GetDictionaryList(&dictList);
-  NS_ENSURE_SUCCESS(rv2, rv2);
-
   // Get the preference value.
   nsAutoString preferredDict;
   preferredDict = Preferences::GetLocalizedString("spellchecker.dictionary");
diff --git a/editor/libeditor/nsEditor.cpp b/editor/libeditor/nsEditor.cpp
index 083b73861553..bfd12eae413e 100644
--- a/editor/libeditor/nsEditor.cpp
+++ b/editor/libeditor/nsEditor.cpp
@@ -1328,15 +1328,6 @@ NS_IMETHODIMP nsEditor::Observe(nsISupports* aSubj, const char *aTopic,
 
   // When nsIEditorSpellCheck::GetCurrentDictionary changes
   if (mInlineSpellChecker) {
-    // if the current dictionary is no longer available, find another one
-    nsCOMPtr<nsIEditorSpellCheck> editorSpellCheck;
-    mInlineSpellChecker->GetSpellChecker(getter_AddRefs(editorSpellCheck));
-    if (editorSpellCheck) {
-      // Note: This might change the current dictionary, which may call
-      // this observer recursively.
-      editorSpellCheck->CheckCurrentDictionary();
-    }
-
     // update the inline spell checker to reflect the new current dictionary
     mInlineSpellChecker->SpellCheckRange(nullptr); // causes recheck
   }
diff --git a/editor/nsIEditorSpellCheck.idl b/editor/nsIEditorSpellCheck.idl
index c211742020d3..7e113a6102d0 100644
--- a/editor/nsIEditorSpellCheck.idl
+++ b/editor/nsIEditorSpellCheck.idl
@@ -9,17 +9,10 @@ interface nsIEditor;
 interface nsITextServicesFilter;
 interface nsIEditorSpellCheckCallback;
 
-[scriptable, uuid(dd32ef3b-a7d8-43d1-9617-5f2dddbe29eb)]
+[scriptable, uuid(c9e630b8-79fd-4546-b068-be1b2a84c347)]
 interface nsIEditorSpellCheck : nsISupports
 {
 
-  /**
-   * Call this on any change in installed dictionaries to ensure that the spell
-   * checker is not using a current dictionary which is no longer available.
-   * If the current dictionary is no longer available, then pick another one.
-   */
-  void checkCurrentDictionary();
-
  /**
    * Returns true if we can enable spellchecking. If there are no available
    * dictionaries, this will return false.