diff --git a/lib/discordrb/api.rb b/lib/discordrb/api.rb
index 74d1897ef..5bbf16e6b 100644
--- a/lib/discordrb/api.rb
+++ b/lib/discordrb/api.rb
@@ -143,7 +143,7 @@ def request(key, major_parameter, type, *attributes)
 
       unless mutex.locked?
         response = JSON.parse(e.response)
-        wait_seconds = response['retry_after'].to_f
+        wait_seconds = response['retry_after'] ? response['retry_after'].to_f : e.response.headers[:retry_after].to_i
         Discordrb::LOGGER.ratelimit("Locking RL mutex (key: #{key}) for #{wait_seconds} seconds due to Discord rate limiting")
         trace("429 #{key.join(' ')}")