diff --git a/src/index.js b/src/index.js
index f4c2024..8b4869c 100644
--- a/src/index.js
+++ b/src/index.js
@@ -185,7 +185,7 @@ async function load_config(instance_name = instance_select.value) {
         obs_init()
     }
     if (config.assets) {
-        if (!config.assets instanceof Array) {
+        if (!(config.assets instanceof Array)) {
             config.assets = [config.assets]
         }
         for (const asset of config.assets) {