diff --git a/dlls/mshtml/htmlstyle.h b/dlls/mshtml/htmlstyle.h
index 5fe1f24..2dedb03 100644
--- a/dlls/mshtml/htmlstyle.h
+++ b/dlls/mshtml/htmlstyle.h
@@ -16,7 +16,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */
 
-typedef struct {
+struct HTMLStyle {
     DispatchEx dispex;
     const IHTMLStyleVtbl    *lpHTMLStyleVtbl;
     const IHTMLStyle2Vtbl   *lpHTMLStyle2Vtbl;
@@ -24,7 +24,7 @@
     LONG ref;
 
     nsIDOMCSSStyleDeclaration *nsstyle;
-} HTMLStyle;
+};
 
 #define HTMLSTYLE(x)     ((IHTMLStyle*)                   &(x)->lpHTMLStyleVtbl)
 #define HTMLSTYLE2(x)    ((IHTMLStyle2*)                  &(x)->lpHTMLStyle2Vtbl)
diff --git a/include/mshtml.idl b/include/mshtml.idl
index eabf867..be99f3c 100644
--- a/include/mshtml.idl
+++ b/include/mshtml.idl
@@ -2245,6 +2245,20 @@
     VARIANT minHeight();
 }
 
+[
+    noncreatable,
+    uuid(3050f285-98b5-11cf-bb82-00aa00bdce0b)
+]
+coclass HTMLStyle
+{
+    [default] dispinterface DispHTMLStyle;
+    interface IHTMLStyle;
+    interface IHTMLStyle2;
+    /* interface IHTMLStyle3; */
+    /* interface IHTMLStyle4; */
+    /* interface IHTMLStyle5; */
+}
+
 /*****************************************************************************
  *    IHTMLRenderStyle interface
  */