diff --git a/libraries/technology/eth_10g/tb_tech_eth_10g_ppm.vhd b/libraries/technology/eth_10g/tb_tech_eth_10g_ppm.vhd
index 21af65d82ada812cdef1c9640d0e2ab6c8d853ed..c4f8f1e772c1d1557bfae113d3ce9fe7d0c046bf 100644
--- a/libraries/technology/eth_10g/tb_tech_eth_10g_ppm.vhd
+++ b/libraries/technology/eth_10g/tb_tech_eth_10g_ppm.vhd
@@ -41,7 +41,7 @@ ENTITY tb_tech_eth_10g_ppm IS
   -- Test bench control parameters
   GENERIC (
     g_technology : NATURAL := c_tech_select_default;
-    g_nof_10ppm  : INTEGER := 1    -- use /= 0 to verify XO ppm offset between two devices
+    g_nof_10ppm  : INTEGER := 0    -- use /= 0 to verify XO ppm offset between two devices
   );
 END tb_tech_eth_10g_ppm;