--- oovbaapi/org/openoffice/excel/XWorkbooks.idl	
+++ oovbaapi/org/openoffice/excel/XWorkbooks.idl
@@ -5,14 +5,20 @@
 #include <com/sun/star/uno/XInterface.idl>
 #endif
 
+#ifndef __org_openoffice_vba_XCollection_idl__
+#include <org/openoffice/vba/XCollection.idl>
+#endif
+
+
 //=============================================================================
 
 module org {  module openoffice {  module excel { 
 
 //=============================================================================
 
-interface XWorkbooks : ::com::sun::star::uno::XInterface
+interface XWorkbooks 
 {
+	interface ::org::openoffice::vba::XCollection;
 	any Add();
 	any Open([in] string Filename, [in] any UpdateLinks, [in] any ReadOnly, [in] any Format, [in] any Password, [in] any WriteResPassword, [in] any IgnoreReadOnlyRecommended, [in] any Origin, [in] any Delimiter, [in] any Editable, [in] any Notify, [in] any Converter, [in] any AddToMru);
 
