diff --git a/README.md b/README.md
index 8077e4e..979ad66 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@
 
 --------------
 
-## How to install prebuilt packages (OpenWrt 21 & 22 & master)
+## How to install prebuilt packages (OpenWrt 19 & 21 & 22 & master)
 
 - Login OpenWrt terminal (SSH)
 
diff --git a/install.sh b/install.sh
index d92e5cb..1aa2bd4 100755
--- a/install.sh
+++ b/install.sh
@@ -10,7 +10,7 @@ platform=$(opkg print-architecture | awk 'END{print $2}')
 # TMP
 TMPDIR=$(mktemp -d) || exit 1
 
-# MYIP
+# GitHub mirror
 ip_info=$(curl -s https://ip.cooluc.com)
 country_code=$(echo $ip_info | sed -r 's/.*country_code":"([^"]*).*/\1/')
 if [ $country_code = "CN" ]; then
@@ -25,20 +25,22 @@ CHECK() (
 	echo -e "\r\n${GREEN_COLOR}Checking available space  ...${RES}"
 	ROOT_SPACE=$(df -m /usr | awk 'END{print $4}')
 	if [ $ROOT_SPACE -lt 40 ]; then
-		echo -e "${RED_COLOR}Error, The system storage space is less than 40MB.${RES}"
+		echo -e "\r\n${RED_COLOR}Error, The system storage space is less than 40MB.${RES}"
 		exit 1;
 	fi
 	echo -e "\r\n${GREEN_COLOR}Checking platform  ...${RES}\r\n"
 	prebuilt="aarch64_cortex-a53 aarch64_cortex-a72 aarch64_generic arm_arm1176jzf-s_vfp arm_arm926ej-s arm_cortex-a15_neon-vfpv4 arm_cortex-a5_vfpv4 arm_cortex-a7 arm_cortex-a7_neon-vfpv4 arm_cortex-a8_vfpv3 arm_cortex-a9 arm_cortex-a9_neon arm_cortex-a9_vfpv3-d16 arm_fa526 arm_mpcore arm_xscale i386_pentium-mmx i386_pentium4 mips64_octeonplus mips_24kc mips_4kec mips_mips32 mipsel_24kc mipsel_24kc_24kf mipsel_74kc mipsel_mips32 x86_64"
-	if [[ "$version" != "21" ]] && [[ "$version" != "22" ]]; then
+	verif=$(expr match "$prebuilt" ".*\($platform\)")
+	if [ "$version" != 19 -a "$version" != 21 -a "$version" != 22 ]; then
 		echo -e "${RED_COLOR}Error! OpenWrt \"$(cat /etc/os-release | grep VERSION_ID | awk -F "[\"\"]" '{print $2}')\" version is not supported.${RES}"
 		exit 1;
-	elif [[ ! "$prebuilt" =~ "$platform" ]]; then
+	elif [[ ! $verif ]]; then
 		echo -e "${RED_COLOR}Error! The current \"$platform\" platform is not currently supported.${RES}"
 		exit 1;
 	else
 		echo -e "${GREEN_COLOR}Update opkg sources ...${RES}"
 		opkg update
+		opkg install luci-compat
 	fi
 )