diff --git a/podkop/files/usr/bin/podkop b/podkop/files/usr/bin/podkop
index f8aeff6..5bad49e 100755
--- a/podkop/files/usr/bin/podkop
+++ b/podkop/files/usr/bin/podkop
@@ -69,6 +69,16 @@ start_main() {
         exit 1
     fi
 
+    if opkg list-installed | grep -qw luci-app-passwall; then
+        log "[critical] Detected luci-app-passwall installed. Remove this package: opkg remove luci-app-passwall"
+        exit 1
+    fi
+
+    if opkg list-installed | grep -qw luci-app-passwall2; then
+        log "[critical] Detected luci-app-passwall2 installed. Remove this package: opkg remove luci-app-passwall2"
+        exit 1
+    fi
+
     if grep -qE 'doh_backup_noresolv|doh_backup_server|doh_server' /etc/config/dhcp; then
         log "[critical] Detected https-dns-proxy in dhcp config. Edit /etc/config/dhcp"
     fi