diff --git a/config.js b/config.js
index 7eb7f9280..6a1f999a7 100644
--- a/config.js
+++ b/config.js
@@ -213,10 +213,11 @@ const CONFIG = {
   RECAPTCHA_SECRET: process.env.TALK_RECAPTCHA_SECRET,
 
   // RECAPTCHA_WINDOW is the rate limit's time interval
-  RECAPTCHA_WINDOW: process.env.RECAPTCHA_WINDOW || '10m',
+  RECAPTCHA_WINDOW: process.env.TALK_RECAPTCHA_WINDOW || '10m',
 
   // After RECAPTCHA_INCORRECT_TRIGGER incorrect attempts, recaptcha will be required.
-  RECAPTCHA_INCORRECT_TRIGGER: process.env.RECAPTCHA_INCORRECT_TRIGGER || 5,
+  RECAPTCHA_INCORRECT_TRIGGER:
+    process.env.TALK_RECAPTCHA_INCORRECT_TRIGGER || 5,
 
   // WEBSOCKET_LIVE_URI is the absolute url to the live endpoint.
   WEBSOCKET_LIVE_URI: process.env.TALK_WEBSOCKET_LIVE_URI || null,