diff --git a/boards/uniboard2c/designs/unb2c_test/revisions/unb2c_test_1GbE_I/tb_unb2c_test_1GbE_I.vhd b/boards/uniboard2c/designs/unb2c_test/revisions/unb2c_test_1GbE_I/tb_unb2c_test_1GbE_I.vhd
index e257de0b83cfe1e875564b8dcb9d0a1cb53953a2..8a127870786799d727d7ebc591f87e73b589c37a 100644
--- a/boards/uniboard2c/designs/unb2c_test/revisions/unb2c_test_1GbE_I/tb_unb2c_test_1GbE_I.vhd
+++ b/boards/uniboard2c/designs/unb2c_test/revisions/unb2c_test_1GbE_I/tb_unb2c_test_1GbE_I.vhd
@@ -57,6 +57,8 @@ BEGIN
   eth_clk(0) <= NOT eth_clk(0) AFTER 8 ns;
   eth_clk(1) <= NOT eth_clk(1) AFTER 8 ns;
 
+  pps <= NOT pps AFTER 80 ns;
+
   eth_sgin <= eth_sgout;  -- loopback eth0 and eth1
 
   u_unb2c_test_1GbE_I : ENTITY work.unb2c_test_1GbE_I
@@ -76,7 +78,6 @@ BEGIN
     ID           => "00000000",
     TESTIO       => OPEN,
 
-
     -- 1GbE Control Interface
     ETH_CLK      => eth_clk,
     ETH_SGIN     => eth_sgin,