--- oovbaapi/org/openoffice/excel/XFont.idl	
+++ oovbaapi/org/openoffice/excel/XFont.idl
@@ -8,13 +8,18 @@
 #include <com/sun/star/lang/IndexOutOfBoundsException.idl>
 #endif
 
+#ifndef __org_openoffice_vba_XHelperInterface_idl__
+#include <org/openoffice/vba/XHelperInterface.idl>
+#endif
 
 //=============================================================================
 
 module org {  module openoffice {  module excel { 
 
-interface XFont: com::sun::star::uno::XInterface
+interface XFont
 {
+	interface ::org::openoffice::vba::XHelperInterface;
+
 	[attribute] any   Size;
 	[attribute] any StandardFontSize;
 	[attribute] any  StandardFont;
