diff --git a/install.sh b/install.sh
index b0cf819..bba883f 100755
--- a/install.sh
+++ b/install.sh
@@ -25,12 +25,15 @@ main() {
 
         [ -f /etc/config/dhcp-opkg ] && cp /etc/config/dhcp /etc/config/dhcp-old && mv /etc/config/dhcp-opkg /etc/config/dhcp
     fi
-    if uci get dhcp.@dnsmasq[0].confdir | grep -q /tmp/dnsmasq.d; then
-        echo "confdir alreadt set"
-    else
-        printf "Setting confdir"
-        uci set dhcp.@dnsmasq[0].confdir='/tmp/dnsmasq.d'
-        uci commit dhcp
+    openwrt_release=$(cat /etc/openwrt_release | grep -Eo [0-9]{2}[.][0-9]{2}[.][0-9]* | cut -d '.' -f 1 | tail -n 1)
+    if [ $openwrt_release -ge 24 ]; then
+        if uci get dhcp.@dnsmasq[0].confdir | grep -q /tmp/dnsmasq.d; then
+            echo "confdir alreadt set"
+        else
+            printf "Setting confdir"
+            uci set dhcp.@dnsmasq[0].confdir='/tmp/dnsmasq.d'
+            uci commit dhcp
+        fi
     fi
     if [ -f "/etc/init.d/podkop" ]; then
         printf "\033[32;1mPodkop is already installed. Just upgrade it? (y/n)\033[0m\n"