diff --git a/extras/libmemif/src/main.c b/extras/libmemif/src/main.c
index 4942767..8cc0d66 100644
--- a/extras/libmemif/src/main.c
+++ b/extras/libmemif/src/main.c
@@ -1843,8 +1843,8 @@
 
 	  b1->desc_index = mq->last_head;
 	  i = 0;
-	  b0->data_len = 0;
-	  b0->buffer_len = 0;
+	  b1->data_len = 0;
+	  b1->buffer_len = 0;
 
 	  b1->data = memif_get_buffer (conn, ring, mq->last_head);
 	  b1->data_len += ring->desc[mq->last_head].length;