diff --git a/target/linux/ath79/generic/base-files/etc/board.d/03_gpio_switches b/target/linux/ath79/generic/base-files/etc/board.d/03_gpio_switches
index 279f518409c..dffd412d10f 100644
--- a/target/linux/ath79/generic/base-files/etc/board.d/03_gpio_switches
+++ b/target/linux/ath79/generic/base-files/etc/board.d/03_gpio_switches
@@ -11,7 +11,7 @@ board=$(board_name)
 case "$board" in
 adtran,bsap1800-v2|\
 adtran,bsap1840)
-	ucidef_add_gpio_switch "wifi1_ext_a" "5GHz External Antenna A" "489" "1"
+	ucidef_add_gpio_switch "wifi1_ext_a" "5GHz External Antenna A" "492" "1"
 	ucidef_add_gpio_switch "wifi1_int_a" "5GHz Internal Antenna A" "493"
 	ucidef_add_gpio_switch "wifi1_ext_b" "5GHz External Antenna B" "494" "1"
 	ucidef_add_gpio_switch "wifi1_int_b" "5GHz Internal Antenna B" "495"