diff --git a/cves/2021/CVE-2021-20090.yaml b/cves/2021/CVE-2021-20090.yaml
index 19a576ad5c..9a8b58fe37 100644
--- a/cves/2021/CVE-2021-20090.yaml
+++ b/cves/2021/CVE-2021-20090.yaml
@@ -6,7 +6,7 @@ info:
   severity: critical
   description: |
     A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.
-  reference:
+  reference: |
       - https://nvd.nist.gov/vuln/detail/CVE-2021-20090
       - https://www.tenable.com/security/research/tra-2021-13
       - https://medium.com/tenable-techblog/bypassing-authentication-on-arcadyan-routers-with-cve-2021-20090-and-rooting-some-buffalo-ea1dd30980c2