diff --git a/src/dom/DefaultDOMPropertyConfig.js b/src/dom/DefaultDOMPropertyConfig.js
index abddcb7438..b068cc45dd 100644
--- a/src/dom/DefaultDOMPropertyConfig.js
+++ b/src/dom/DefaultDOMPropertyConfig.js
@@ -45,9 +45,11 @@ var DefaultDOMPropertyConfig = {
     autoPlay: HAS_BOOLEAN_VALUE,
     cellPadding: null,
     cellSpacing: null,
+    charSet: MUST_USE_ATTRIBUTE,
     checked: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
     className: MUST_USE_PROPERTY,
     colSpan: null,
+    content: null,
     contentEditable: null,
     contextMenu: MUST_USE_ATTRIBUTE,
     controls: MUST_USE_PROPERTY | HAS_BOOLEAN_VALUE,
@@ -62,6 +64,7 @@ var DefaultDOMPropertyConfig = {
     hidden: MUST_USE_ATTRIBUTE | HAS_BOOLEAN_VALUE,
     href: null,
     htmlFor: null,
+    httpEquiv: null,
     icon: null,
     id: MUST_USE_PROPERTY,
     label: null,