diff --git a/libraries/io/eth/src/vhdl/eth_tester_pkg.vhd b/libraries/io/eth/src/vhdl/eth_tester_pkg.vhd
index 4c71470bc99081f0e2852d1a67c9a7b92cb78b85..64a0e4e8eca3571ecb703b6b638df2eb49d7b293 100644
--- a/libraries/io/eth/src/vhdl/eth_tester_pkg.vhd
+++ b/libraries/io/eth/src/vhdl/eth_tester_pkg.vhd
@@ -35,7 +35,7 @@ PACKAGE eth_tester_pkg is
 
   CONSTANT c_eth_tester_bg_block_len_max   : NATURAL := c_network_eth_payload_jumbo_max;  -- 9000 octets
   CONSTANT c_eth_tester_rx_block_len_max   : NATURAL := c_network_eth_payload_jumbo_max + c_network_eth_crc_len;  -- 9004 octets
-  CONSTANT c_eth_tester_eth_packet_len_max : NATURAL := c_network_eth_frame_jumbo_max;   -- 9018 octets = 14 header + 9000 + 4 crc
+  CONSTANT c_eth_tester_eth_packet_len_max : NATURAL := c_network_eth_word_align_len + c_network_eth_frame_jumbo_max;   -- 9020 octets = 2 word align + 14 header + 9000 + 4 crc
 
   -- hdr_field_sel bit selects where the hdr_field value is set:
   -- . 0 = data path controlled, value is set in data path, so field_default()