diff --git a/src/tests/vnet/session/tcp_echo.c b/src/tests/vnet/session/tcp_echo.c
index d76e939..99b6765 100644
--- a/src/tests/vnet/session/tcp_echo.c
+++ b/src/tests/vnet/session/tcp_echo.c
@@ -507,7 +507,7 @@
 {
   int n_to_read, n_read;
 
-  n_to_read = svm_fifo_max_dequeue (s->rx_fifo);
+  n_to_read = svm_fifo_max_dequeue_cons (s->rx_fifo);
   if (!n_to_read)
     return;
 
@@ -1063,7 +1063,7 @@
    * message queue */
   svm_fifo_unset_event (s->rx_fifo);
 
-  max_dequeue = svm_fifo_max_dequeue (s->rx_fifo);
+  max_dequeue = svm_fifo_max_dequeue_cons (s->rx_fifo);
   if (PREDICT_FALSE (!max_dequeue))
     return;
 
diff --git a/src/tests/vnet/session/udp_echo.c b/src/tests/vnet/session/udp_echo.c
index 4fd6c86..91d5dcc 100644
--- a/src/tests/vnet/session/udp_echo.c
+++ b/src/tests/vnet/session/udp_echo.c
@@ -454,7 +454,7 @@
 	  else
 	    {
 	      /* We don't do anything with the data, drop it */
-	      actual_transfer = svm_fifo_max_dequeue (rx_fifo);
+	      actual_transfer = svm_fifo_max_dequeue_cons (rx_fifo);
 	      svm_fifo_dequeue_drop (rx_fifo, actual_transfer);
 	    }
 	}
@@ -724,7 +724,7 @@
   test_buf_offset = utm->bytes_sent % test_buf_len;
   bytes_this_chunk = clib_min (test_buf_len - test_buf_offset,
 			       utm->bytes_to_send);
-  enq_space = svm_fifo_max_enqueue (s->tx_fifo);
+  enq_space = svm_fifo_max_enqueue_prod (s->tx_fifo);
   bytes_this_chunk = clib_min (bytes_this_chunk, enq_space);
 
   written = app_send (s, test_data + test_buf_offset, bytes_this_chunk,
@@ -975,7 +975,8 @@
   rx_fifo = session->rx_fifo;
   tx_fifo = session->tx_fifo;
 
-  max_dequeue = svm_fifo_max_dequeue (rx_fifo);
+
+  max_dequeue = svm_fifo_max_dequeue_cons (rx_fifo);
   /* Allow enqueuing of a new event */
   svm_fifo_unset_event (rx_fifo);