diff --git a/obexd/client/transfer.c b/obexd/client/transfer.c
index 89690d0..411a7c0 100644
--- a/obexd/client/transfer.c
+++ b/obexd/client/transfer.c
@@ -610,7 +610,7 @@ static gboolean transfer_start_put(struct obc_transfer *transfer, GError **err)
 	return TRUE;
 }
 
-gboolean obc_transfer_start(struct obc_transfer *transfer, GObex *obex,
+gboolean obc_transfer_start(struct obc_transfer *transfer, void *obex,
 								GError **err)
 {
 	transfer->obex = g_obex_ref(obex);
diff --git a/obexd/client/transfer.h b/obexd/client/transfer.h
index f42e21f..1b83d18 100644
--- a/obexd/client/transfer.h
+++ b/obexd/client/transfer.h
@@ -55,7 +55,7 @@ gboolean obc_transfer_set_callback(struct obc_transfer *transfer,
 					transfer_callback_t func,
 					void *user_data);
 
-gboolean obc_transfer_start(struct obc_transfer *transfer, GObex *obex,
+gboolean obc_transfer_start(struct obc_transfer *transfer, void *obex,
 								GError **err);
 guint8 obc_transfer_get_operation(struct obc_transfer *transfer);