--- oovbaapi/org/openoffice/excel/XComments.idl	
+++ oovbaapi/org/openoffice/excel/XComments.idl
@@ -7,12 +7,17 @@
 #ifndef __com_sun_star_lang_IllegalArgumentException_idl__
 #include <com/sun/star/lang/IllegalArgumentException.idl>
 #endif
+#ifndef __org_openoffice_vba_XCollection_idl__
+#include <org/openoffice/vba/XCollection.idl>
+#endif
+
 //=============================================================================
 
 module org {  module openoffice {  module excel {
 
-interface XComments: com::sun::star::uno::XInterface
+interface XComments
 {
+	interface org::openoffice::vba::XCollection;
 };
 
 //=============================================================================
