diff --git a/lib/emac/src/tb_emac_top_jb.vhd b/lib/emac/src/tb_emac_top_jb.vhd
index b22e052..bd661e7 100644
--- a/lib/emac/src/tb_emac_top_jb.vhd
+++ b/lib/emac/src/tb_emac_top_jb.vhd
@@ -572,7 +572,7 @@ STIMULUS: process
 		pktgen_en		<= '1';
 		pkt_count		<= 0;
 		for i in 1 to 500 loop
-			wait for 60 us;
+			wait for 50 us;
 			emac_read (0);
 			emac_free;
 			pkt_count	<= pkt_count + 1;