diff --git a/src/routes/setting/config/Firebase.tsx b/src/routes/setting/config/Firebase.tsx
index 4fdf885c..c00b9fb9 100644
--- a/src/routes/setting/config/Firebase.tsx
+++ b/src/routes/setting/config/Firebase.tsx
@@ -63,6 +63,7 @@ export default function ConfigFirebase() {
           <Label htmlFor="desc">Private Key</Label>
           <Textarea
             rows={10}
+            spellCheck={false}
             disabled={!enabled}
             data-type="private_key"
             onChange={handleChange}