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
new file mode 100644
index 0000000000..5965fdc2f5
--- /dev/null
+++ b/target/linux/mvebu/cortexa9/base-files/etc/uci-defaults/05_fix-compat-version
@@ -0,0 +1,21 @@
+#
+# 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