diff --git a/coreapi/vcard_stubs.c b/coreapi/vcard_stubs.c
index 3bb7bed9e..d50ab29b9 100644
--- a/coreapi/vcard_stubs.c
+++ b/coreapi/vcard_stubs.c
@@ -20,6 +20,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "vcard.h"
 
 struct _LinphoneVCard {
+	void *dummy;
 };
 
 LinphoneVCard* linphone_vcard_new(void) {