diff --git a/master-portal/master-portal-common/src/main/java/eu/rcauth/masterportal/servlet/util/CookieUtils.java b/master-portal/master-portal-common/src/main/java/eu/rcauth/masterportal/servlet/util/CookieUtils.java
index a802f09..2c4fc4d 100644
--- a/master-portal/master-portal-common/src/main/java/eu/rcauth/masterportal/servlet/util/CookieUtils.java
+++ b/master-portal/master-portal-common/src/main/java/eu/rcauth/masterportal/servlet/util/CookieUtils.java
@@ -45,6 +45,8 @@ public static String clearCookie(HttpServletRequest request, HttpServletResponse
                     // This way if the user surfs to another portal there won't
                     // be a cookie clash.
                     cookie.setMaxAge(0);
+                    cookie.setValue(""); // not necessary but good practice
+                    cookie.setSecure(true); // prevents sameSite without secure warning
                     response.addCookie(cookie);
                 }
             }