diff --git a/Sources/VaporSecurityHeaders/SecurityHeaders+HeaderKey.swift b/Sources/VaporSecurityHeaders/SecurityHeaders+HeaderKey.swift
index dfd8f97..5ae644a 100644
--- a/Sources/VaporSecurityHeaders/SecurityHeaders+HeaderKey.swift
+++ b/Sources/VaporSecurityHeaders/SecurityHeaders+HeaderKey.swift
@@ -2,9 +2,9 @@ import Vapor
 
 public extension HTTPHeaderName {
 
-    public static let contentSecurityPolicy = HTTPHeaderName("Content-Security-Policy")
-    public static let xXssProtection = HTTPHeaderName("X-XSS-Protection")
-    public static let xContentTypeOptions = HTTPHeaderName("X-Content-Type-Options")
-    public static let contentSecurityPolicyReportOnly = HTTPHeaderName("Content-Security-Policy-Report-Only")
-    public static let referrerPolicy = HTTPHeaderName("Referrer-Policy")
+    static let contentSecurityPolicy = HTTPHeaderName("Content-Security-Policy")
+    static let xXssProtection = HTTPHeaderName("X-XSS-Protection")
+    static let xContentTypeOptions = HTTPHeaderName("X-Content-Type-Options")
+    static let contentSecurityPolicyReportOnly = HTTPHeaderName("Content-Security-Policy-Report-Only")
+    static let referrerPolicy = HTTPHeaderName("Referrer-Policy")
 }