1 files changed, 3 insertions, 1 deletions
diff --git a/components/script/dom/webidls/HTMLTextAreaElement.webidl b/components/script/dom/webidls/HTMLTextAreaElement.webidl
index 7feec003ba5..fa70cb4d47a 100644
--- a/components/script/dom/webidls/HTMLTextAreaElement.webidl
+++ b/components/script/dom/webidls/HTMLTextAreaElement.webidl
@@ -7,7 +7,8 @@
 interface HTMLTextAreaElement : HTMLElement {
   //         attribute DOMString autocomplete;
   //         attribute boolean autofocus;
-           attribute unsigned long cols;
+             [SetterThrows]
+             attribute unsigned long cols;
   //         attribute DOMString dirName;
            attribute boolean disabled;
   //readonly attribute HTMLFormElement? form;
@@ -18,6 +19,7 @@ interface HTMLTextAreaElement : HTMLElement {
            attribute DOMString placeholder;
            attribute boolean readOnly;
            attribute boolean required;
+           [SetterThrows]
            attribute unsigned long rows;
            attribute DOMString wrap;