diff --git a/lib/emac/src/tb_emac_top_jb.vhd b/lib/emac/src/tb_emac_top_jb.vhd
index 0890d2c..dddf042 100644
--- a/lib/emac/src/tb_emac_top_jb.vhd
+++ b/lib/emac/src/tb_emac_top_jb.vhd
@@ -32,7 +32,7 @@ END tb_emac_top_jb;
 ARCHITECTURE behavior OF tb_emac_top_jb IS 
 
 	constant CLK_PERIOD		: time := 10 ns;
-	constant MII_CLK_PERIOD	: time := 7.7 ns;
+	constant MII_CLK_PERIOD	: time := 37.7 ns;
 
 	signal CLK				: std_logic := '1';
 	signal RST				: std_logic := '1';
@@ -504,9 +504,9 @@ STIMULUS: process
 		wait for 6*MII_CLK_PERIOD;
 		RST <= '0';
 		wait for 60*CLK_PERIOD;
-		emac_rx_reset_1000mbps;
-		emac_tx_reset_1000mbps;
-		pktgen_gigabit	<= '1';
+		emac_rx_reset_100mbps;
+		emac_tx_reset_100mbps;
+		pktgen_gigabit	<= '0';
 		pktgen_fcs_en	<= '1';
 		wait for 60*CLK_PERIOD;