diff --git a/docs/prerequisite-dns.md b/docs/prerequisite-dns.md
index 036f28591..9930c92f0 100644
--- a/docs/prerequisite-dns.md
+++ b/docs/prerequisite-dns.md
@@ -72,7 +72,7 @@ Here are some tools you can use to verify your DNS configuration:
 - [MX Toolbox](https://mxtoolbox.com/SuperTool.aspx) (DNS, SMTP, RBL)
 - [port25.com](https://www.port25.com/dkim-wizard/) (DKIM, SPF)
 - [Mail-tester](https://www.mail-tester.com/) (DKIM, DMARC, SPF)
-- [DMARC Analyzer](https://www.dmarcanalyzer.com/spf-record-check/) (DMARC, SPF)
+- [DMARC Analyzer](https://www.dmarcanalyzer.com/spf/checker/) (DMARC, SPF)
 
 ## Misc