diff --git a/cloaks.json b/cloaks.json
index a0444e46..28698317 100644
--- a/cloaks.json
+++ b/cloaks.json
@@ -26,7 +26,7 @@
     "khan": [
         "Dashboard | Khan Academy", "https://cdn.kastatic.org/images/favicon.ico?logo"
     ],
-    "Quizlet": [
+    "quizlet": [
         "Your Sets", "https://assets.quizlet.com/a/j/dist/app/i/logo/2021/q-twilight.e27821d9baad165.png"
     ]
 }