diff --git a/libraries/io/eth/src/vhdl/eth_tester_tx.vhd b/libraries/io/eth/src/vhdl/eth_tester_tx.vhd
index 2468c46966073788b274257bdbe67d2d802cead0..e4ae9c2c1596302083f695dfad1218497d9d20ce 100644
--- a/libraries/io/eth/src/vhdl/eth_tester_tx.vhd
+++ b/libraries/io/eth/src/vhdl/eth_tester_tx.vhd
@@ -178,11 +178,12 @@ BEGIN
   -------------------------------------------------------------------------------
   -- Assemble header info
   -------------------------------------------------------------------------------
-  -- Whether the dp_offload_tx_hdr_fields value is actually used in the Tx header depends on:
+  -- Whether the dp_offload_tx_hdr_fields value is actually used in the Tx
+  -- header depends on:
   --   c_eth_tester_hdr_field_sel = "1"&"101"&"111011111001"&"0100"&"100"
   --                                     eth   ip             udp    app
-  --   where 0 = data path, 1 = MM controlled. The '0' fields are assigned here in hdr_fields_slv_in
-  --   in order:
+  --   where 0 = data path, 1 = MM controlled. The '0' fields are assigned here
+  --   in hdr_fields_slv_in in order:
   --     access   field
   --     MM       word_align
   --
@@ -199,22 +200,24 @@ BEGIN
   --     MM       ip_fragment_offset
   --     MM       ip_time_to_live
   --     MM       ip_protocol
-  --        DP    ip_header_checksum --> not here, will be filled in by 1GbE eth component
+  --        DP    ip_header_checksum --> not here, will be filled in by 1GbE
+  --                                     eth component
   --        DP    ip_src_addr
   --     MM       ip_dst_addr
   --
   --        DP    udp_src_port
   --     MM       udp_dst_port
   --        DP    udp_total_length
-  --        DP    udp_checksum --> default fixed 0, so not used, not calculated here or in 1GbE
-  --                               eth component because would require store and forward
-  --
+  --        DP    udp_checksum --> default fixed 0, so not used, not calculated
+  --                               here or in 1GbE eth component because would
+  --                               require store and forward
   --     MM       dp_reserved
   --        DP    dp_sync
   --        DP    dp_bsn
 
-  -- The bg_block_len is still valid because bg_ctrl_hold holds the BG settings until it restarts,
-  -- so no need to pass bg_block_len on via e.g. the channel field in u_fifo
+  -- The bg_block_len is still valid because bg_ctrl_hold holds the BG settings
+  -- until it restarts, so no need to pass bg_block_len on via e.g. the channel
+  -- field in u_fifo.
   bg_block_len <= TO_UINT(bg_ctrl_hold.samples_per_packet(15 DOWNTO 0));  -- packet lenghts fit in 16b
   app_total_length <= c_eth_tester_app_hdr_len + bg_block_len WHEN rising_edge(st_clk);
   udp_total_length <= app_total_length + c_network_udp_header_len WHEN rising_edge(st_clk);