diff --git a/vulnerabilities/open-redirect.yaml b/vulnerabilities/open-redirect.yaml
index 5712f4ab73..d75eee346b 100644
--- a/vulnerabilities/open-redirect.yaml
+++ b/vulnerabilities/open-redirect.yaml
@@ -16,5 +16,5 @@ requests:
     matchers:
       - type: regex
         regex:
-          - "^Location\\:(| *| (http|https)\\:\\/\\/| *\\/\\/| [a-zA-Z]*\\.| (http|https)\\:\\/\\/[a-zA-Z]*\\.)evil\\.com"
+          - '^Location:\s?(?:(?:http|https)://|//|[a-zA-Z0-9\-_]+\.|(?:http|https)://[a-zA-Z0-9\-_]+\.)?evil\.com'
         part: header