diff --git a/dom/html/HTMLTextAreaElement.cpp b/dom/html/HTMLTextAreaElement.cpp
index 97fb5d7ab92d..32e255a1079f 100644
--- a/dom/html/HTMLTextAreaElement.cpp
+++ b/dom/html/HTMLTextAreaElement.cpp
@@ -690,21 +690,6 @@ HTMLTextAreaElement::GetTextLength(int32_t *aTextLength)
   return NS_OK;
 }
 
-NS_IMETHODIMP
-HTMLTextAreaElement::GetSelectionStart(int32_t *aSelectionStart)
-{
-  NS_ENSURE_ARG_POINTER(aSelectionStart);
-
-  ErrorResult error;
-  Nullable<uint32_t> selStart(GetSelectionStart(error));
-  if (error.Failed()) {
-    return error.StealNSResult();
-  }
-
-  *aSelectionStart = int32_t(selStart.Value());
-  return error.StealNSResult();
-}
-
 Nullable<uint32_t>
 HTMLTextAreaElement::GetSelectionStart(ErrorResult& aError)
 {
@@ -720,15 +705,6 @@ HTMLTextAreaElement::GetSelectionStart(ErrorResult& aError)
   return Nullable<uint32_t>(selStart);
 }
 
-NS_IMETHODIMP
-HTMLTextAreaElement::SetSelectionStart(int32_t aSelectionStart)
-{
-  ErrorResult error;
-  Nullable<uint32_t> selStart(aSelectionStart);
-  SetSelectionStart(selStart, error);
-  return error.StealNSResult();
-}
-
 void
 HTMLTextAreaElement::SetSelectionStart(const Nullable<uint32_t>& aSelectionStart,
                                        ErrorResult& aError)
@@ -765,21 +741,6 @@ HTMLTextAreaElement::SetSelectionStart(const Nullable<uint32_t>& aSelectionStart
   }
 }
 
-NS_IMETHODIMP
-HTMLTextAreaElement::GetSelectionEnd(int32_t *aSelectionEnd)
-{
-  NS_ENSURE_ARG_POINTER(aSelectionEnd);
-
-  ErrorResult error;
-  Nullable<uint32_t> selEnd(GetSelectionEnd(error));
-  if (error.Failed()) {
-    return error.StealNSResult();
-  }
-
-  *aSelectionEnd = int32_t(selEnd.Value());
-  return NS_OK;
-}
-
 Nullable<uint32_t>
 HTMLTextAreaElement::GetSelectionEnd(ErrorResult& aError)
 {
@@ -795,15 +756,6 @@ HTMLTextAreaElement::GetSelectionEnd(ErrorResult& aError)
   return Nullable<uint32_t>(selEnd);
 }
 
-NS_IMETHODIMP
-HTMLTextAreaElement::SetSelectionEnd(int32_t aSelectionEnd)
-{
-  ErrorResult error;
-  Nullable<uint32_t> selEnd(aSelectionEnd);
-  SetSelectionEnd(selEnd, error);
-  return error.StealNSResult();
-}
-
 void
 HTMLTextAreaElement::SetSelectionEnd(const Nullable<uint32_t>& aSelectionEnd,
                                      ErrorResult& aError)
diff --git a/dom/interfaces/html/nsIDOMHTMLTextAreaElement.idl b/dom/interfaces/html/nsIDOMHTMLTextAreaElement.idl
index 509b0c916edf..6e1d324bd672 100644
--- a/dom/interfaces/html/nsIDOMHTMLTextAreaElement.idl
+++ b/dom/interfaces/html/nsIDOMHTMLTextAreaElement.idl
@@ -54,8 +54,6 @@ interface nsIDOMHTMLTextAreaElement : nsISupports
   void setCustomValidity(in DOMString error);
 
   void select();
-           attribute long                  selectionStart;
-           attribute long                  selectionEnd;
   void setSelectionRange(in long selectionStart, in long selectionEnd, [optional] in DOMString direction);
            attribute DOMString             selectionDirection;