diff --git a/libraries/technology/eth_10g/tb_tech_eth_10g.vhd b/libraries/technology/eth_10g/tb_tech_eth_10g.vhd
index 03bba5cb5620bfb4704917f9db1f5343f8203e1a..d643609e24855084f92e4e31c58f8e20795ab221 100644
--- a/libraries/technology/eth_10g/tb_tech_eth_10g.vhd
+++ b/libraries/technology/eth_10g/tb_tech_eth_10g.vhd
@@ -25,7 +25,7 @@
 --   . proc_tech_mac_10g_rx_packet() for expected header and data type
 --   . tx_pkt_cnt=rx_pkt_cnt > 0 must be true at the tb_end.
 -- Usage:
---   > as 14
+--   > as 16
 --   > run -all
 
 LIBRARY IEEE, technology_lib, tech_pll_lib, tech_mac_10g_lib, common_lib, dp_lib;
@@ -372,6 +372,7 @@ BEGIN
       REPORT "Not all transmitted packets were received." SEVERITY ERROR;
     END IF;
     proc_common_wait_some_cycles(clk_156, 100);
+    --proc_common_wait_some_cycles(clk_156, 10000);  -- uncomment to simulate somewhat longer without tx packet data
     
     -- Stop the simulation
     ASSERT FALSE REPORT "Simulation finished." SEVERITY FAILURE;