diff --git a/doc/adding-a-device.md b/doc/adding-a-device.md
index 0f950b81..7e2aa150 100644
--- a/doc/adding-a-device.md
+++ b/doc/adding-a-device.md
@@ -38,8 +38,8 @@ existing files as the template:
 ```
 
 `MACHINE_CHIPSET` is `RTL8373` or `RTL8372`; a build without it will fail. It selects the default
-logical port range: `min_port` is `0` for RTL8373 and `3` for RTL8372, while `max_port` is `8`,
-the highest logical port index. A board with a different range defines
+logical port range: `MACHINE_MIN_PORT` is `0` for RTL8373 and `3` for RTL8372, while
+`MACHINE_MAX_PORT` is `8`, the highest logical port index. A board with a different range defines
 `MACHINE_MIN_PORT` and/or `MACHINE_MAX_PORT` in its header to override the
 defaults.
 
@@ -94,16 +94,16 @@ __code const struct machine machine = {
 };
 ```
 
-`MACHINE_COMMON_SETTING` (from `machine_defs.h`) initializes `machine_name`,
-`isRTL8373`, `min_port` and `max_port` from the header's `MACHINE_MODEL` and
-`MACHINE_CHIPSET`. Keep it as the first initializer and list the
-board-specific fields after it.
+`MACHINE_COMMON_SETTING` (from `machine_defs.h`) initializes `machine_name` and
+`isRTL8373` from the header's `MACHINE_MODEL` and `MACHINE_CHIPSET`. The logical
+port range comes from `MACHINE_MIN_PORT` and `MACHINE_MAX_PORT` in `machine.h`.
+Keep it as the first initializer and list the board-specific fields after it.
 
 ### Fields
 
 | Field | Meaning |
 |-------|---------|
-| `MACHINE_COMMON_SETTING` | expands to `machine_name` (`MACHINE_MODEL`), `isRTL8373` (`1` for `RTL8373`, `0` for `RTL8372`), `min_port` and `max_port`; all are derived from the header's `MACHINE_CHIPSET` (see Step 1) |
+| `MACHINE_COMMON_SETTING` | expands to `machine_name` (`MACHINE_MODEL`) and `isRTL8373` (`1` for `RTL8373`, `0` for `RTL8372`); both are derived from the header's `MACHINE_CHIPSET` (see Step 1) |
 | `n_sfp` | number of SFP+ cages |
 | `n_10g` | SerDes 10G capability used by the RTL837xN init: `0` none, `1` one, `2` two 10G-capable SerDes |
 | `log_to_phys_port[9]` | logical port (0-based index) → physical front-panel port number |
diff --git a/machine.h b/machine.h
index b7b3f63f..78dfd77a 100644
--- a/machine.h
+++ b/machine.h
@@ -84,10 +84,6 @@ struct sfp_port
 struct machine {
 	char machine_name[30];
 	uint8_t isRTL8373;
-	// Lowest logical port number
-	uint8_t min_port;
-	// Highest logical port number
-	uint8_t max_port;
 	uint8_t n_sfp;
 	uint8_t n_10g;
 	uint8_t log_to_phys_port[9];
diff --git a/machine/machine_defs.h b/machine/machine_defs.h
index 4775a58f..be77636d 100644
--- a/machine/machine_defs.h
+++ b/machine/machine_defs.h
@@ -43,8 +43,6 @@
 
 #define MACHINE_COMMON_SETTING \
 	.machine_name = MACHINE_MODEL, \
-	.isRTL8373 = MACHINE_CHIPSET == RTL8373, \
-	.min_port = MACHINE_MIN_PORT, \
-	.max_port = MACHINE_MAX_PORT
+	.isRTL8373 = MACHINE_CHIPSET == RTL8373
 
 #endif
diff --git a/test/env_tables.c b/test/env_tables.c
index 719e045a..e4d23c37 100644
--- a/test/env_tables.c
+++ b/test/env_tables.c
@@ -59,8 +59,6 @@ uint8_t *hex = (uint8_t *)hex_chars;
 /* ---- a 9-port RTL8373 whose logical ports map to themselves ---- */
 const struct machine machine = {
 	.machine_name = "HOSTTEST",
-	.min_port = 0,
-	.max_port = 8,
 	.n_sfp = 0,
 	.log_to_phys_port = { 1, 2, 3, 4, 5, 6, 7, 8, 9 },
 	.phys_to_log_port = { 0, 1, 2, 3, 4, 5, 6, 7, 8 },
diff --git a/test/test_lacp.c b/test/test_lacp.c
index 160c773e..56b8e56f 100644
--- a/test/test_lacp.c
+++ b/test/test_lacp.c
@@ -14,8 +14,11 @@
 uint8_t uip_buf[UIP_CONF_BUFFER_ALLOC_SIZE];
 uint16_t uip_len;
 struct uip_eth_addr uip_ethaddr = { .addr = {0x02,0x11,0x22,0x33,0x44,0x55} };
-const struct machine machine = { .min_port = 0, .max_port = 7,
+const struct machine machine = {
 			   .log_to_phys_port = {5, 1, 2, 3, 4, 6, 7, 8, 9} };
+/* Logical ports of the mock machine above */
+#define TEST_MIN_PORT 0
+#define TEST_MAX_PORT 7
 struct machine_runtime machine_detected = { .isRTL8373 = 1 };
 uint8_t lacpEnabled;
 uint16_t management_vlan;	/* mocked; slow-protocol path zeroes it per-frame */
@@ -216,7 +219,7 @@ int main(int argc, char **argv)
 	lacp_lag_set(0, 0x00ff);
 	step(8);
 	int all_tx = 1, sane = 1;
-	for (int i = machine.min_port; i <= machine.max_port; i++) {
+	for (int i = TEST_MIN_PORT; i <= TEST_MAX_PORT; i++) {
 		if (!tx_count[i]) all_tx = 0;
 		if (last_tx[i].ethertype != HTONS(0x8809) || last_tx[i].subtype != 1
 		    || last_tx[i].dst[5] != 0x02