diff --git a/target/linux/kirkwood/base-files/etc/uci-defaults/05_fix-compat-version b/target/linux/kirkwood/base-files/etc/uci-defaults/05_fix-compat-version
deleted file mode 100644
index d7f8488e88..0000000000
--- a/target/linux/kirkwood/base-files/etc/uci-defaults/05_fix-compat-version
+++ /dev/null
@@ -1,16 +0,0 @@
-#
-# Copyright (C) 2020 OpenWrt.org
-#
-
-. /lib/functions.sh
-
-case "$(board_name)" in
-	linksys,e4200-v2|\
-	linksys,ea3500|\
-	linksys,ea4500)
-		uci set system.@system[0].compat_version="1.1"
-		uci commit system
-		;;
-esac
-
-exit 0
diff --git a/target/linux/mvebu/cortexa9/base-files/etc/uci-defaults/05_fix-compat-version b/target/linux/mvebu/cortexa9/base-files/etc/uci-defaults/05_fix-compat-version
deleted file mode 100644
index 5965fdc2f5..0000000000
--- a/target/linux/mvebu/cortexa9/base-files/etc/uci-defaults/05_fix-compat-version
+++ /dev/null
@@ -1,21 +0,0 @@
-#
-# Copyright (C) 2020 OpenWrt.org
-#
-
-. /lib/functions.sh
-
-case "$(board_name)" in
-	linksys,wrt1200ac|\
-	linksys,wrt1900ac-v1|\
-	linksys,wrt1900ac-v2|\
-	linksys,wrt1900acs|\
-	linksys,wrt3200acm|\
-	linksys,wrt32x|\
-	solidrun,clearfog-base-a1|\
-	solidrun,clearfog-pro-a1)
-		uci set system.@system[0].compat_version="1.1"
-		uci commit system
-		;;
-esac
-
-exit 0
diff --git a/target/linux/ramips/mt7621/base-files/etc/uci-defaults/05_fix-compat-version b/target/linux/ramips/mt7621/base-files/etc/uci-defaults/05_fix-compat-version
deleted file mode 100644
index 09cce180e4..0000000000
--- a/target/linux/ramips/mt7621/base-files/etc/uci-defaults/05_fix-compat-version
+++ /dev/null
@@ -1,8 +0,0 @@
-#
-# Copyright (C) 2020 OpenWrt.org
-#
-
-uci set system.@system[0].compat_version="1.1"
-uci commit system
-
-exit 0