diff --git a/rtl/arp_eth_rx.v b/rtl/arp_eth_rx.v
index 1bac60c6f..4366ede3a 100644
--- a/rtl/arp_eth_rx.v
+++ b/rtl/arp_eth_rx.v
@@ -86,11 +86,13 @@ module arp_eth_rx #
     output wire                   error_invalid_header
 );
 
-parameter CYCLE_COUNT = (28+KEEP_WIDTH-1)/KEEP_WIDTH;
+parameter HDR_SIZE = 28;
+
+parameter CYCLE_COUNT = (HDR_SIZE+KEEP_WIDTH-1)/KEEP_WIDTH;
 
 parameter PTR_WIDTH = $clog2(CYCLE_COUNT);
 
-parameter OFFSET = 28 % KEEP_WIDTH;
+parameter OFFSET = HDR_SIZE % KEEP_WIDTH;
 
 // bus width assertions
 initial begin
diff --git a/rtl/arp_eth_tx.v b/rtl/arp_eth_tx.v
index cd5400505..535c397c3 100644
--- a/rtl/arp_eth_tx.v
+++ b/rtl/arp_eth_tx.v
@@ -82,11 +82,13 @@ module arp_eth_tx #
     output wire                   busy
 );
 
-parameter CYCLE_COUNT = (28+KEEP_WIDTH-1)/KEEP_WIDTH;
+parameter HDR_SIZE = 28;
+
+parameter CYCLE_COUNT = (HDR_SIZE+KEEP_WIDTH-1)/KEEP_WIDTH;
 
 parameter PTR_WIDTH = $clog2(CYCLE_COUNT);
 
-parameter OFFSET = 28 % KEEP_WIDTH;
+parameter OFFSET = HDR_SIZE % KEEP_WIDTH;
 
 // bus width assertions
 initial begin
diff --git a/rtl/eth_axis_rx.v b/rtl/eth_axis_rx.v
index 3501841d1..2c713935b 100644
--- a/rtl/eth_axis_rx.v
+++ b/rtl/eth_axis_rx.v
@@ -77,11 +77,13 @@ module eth_axis_rx #
     output wire                  error_header_early_termination
 );
 
-parameter CYCLE_COUNT = (14+KEEP_WIDTH-1)/KEEP_WIDTH;
+parameter HDR_SIZE = 14;
+
+parameter CYCLE_COUNT = (HDR_SIZE+KEEP_WIDTH-1)/KEEP_WIDTH;
 
 parameter PTR_WIDTH = $clog2(CYCLE_COUNT);
 
-parameter OFFSET = 14 % KEEP_WIDTH;
+parameter OFFSET = HDR_SIZE % KEEP_WIDTH;
 
 // bus width assertions
 initial begin
diff --git a/rtl/eth_axis_tx.v b/rtl/eth_axis_tx.v
index fa742a62b..f0ee5f16a 100644
--- a/rtl/eth_axis_tx.v
+++ b/rtl/eth_axis_tx.v
@@ -76,11 +76,13 @@ module eth_axis_tx #
     output wire                  busy
 );
 
-parameter CYCLE_COUNT = (14+KEEP_WIDTH-1)/KEEP_WIDTH;
+parameter HDR_SIZE = 14;
+
+parameter CYCLE_COUNT = (HDR_SIZE+KEEP_WIDTH-1)/KEEP_WIDTH;
 
 parameter PTR_WIDTH = $clog2(CYCLE_COUNT);
 
-parameter OFFSET = 14 % KEEP_WIDTH;
+parameter OFFSET = HDR_SIZE % KEEP_WIDTH;
 
 // bus width assertions
 initial begin