diff --git a/dudeswave/src/dudeswave_auth.erl b/dudeswave/src/dudeswave_auth.erl
index 430dde0..5ea5c04 100644
--- a/dudeswave/src/dudeswave_auth.erl
+++ b/dudeswave/src/dudeswave_auth.erl
@@ -263,8 +263,8 @@ Spec:
 	Cookie :: binary().
 
 auth_cookies(Req) ->
-	#{dudeauth := Cookie, dudename := User} = cowboy_req:match_cookies([dudeauth,
-	    dudename], Req),
+	#{?DUDEAUTH := Cookie, ?DUDENAME := User} = cowboy_req:match_cookies([?DUDEAUTH,
+	    ?DUDENAME], Req),
 
 	{User, Cookie}.
 
@@ -287,9 +287,9 @@ completely invalidated.
 	Req0 :: cowboy_req:req().
 
 invalidate_cookies(Req) ->
-	Req0 = cowboy_req:set_resp_cookie(<<"dudeauth">>, <<"">>, Req,
+	Req0 = cowboy_req:set_resp_cookie(<<"?DUDEAUTH">>, <<"">>, Req,
 	    #{max_age => 0}),
-	Req1 = cowboy_req:set_resp_cookie(<<"dudename">>, <<"">>, Req0,
+	Req1 = cowboy_req:set_resp_cookie(<<"?DUDENAME">>, <<"">>, Req0,
 	    #{max_age => 0}),
 
 	Req1.
@@ -318,9 +318,9 @@ A new request object `Req0`is returned, with the user and auth cookies set.
 	Req0 :: cowboy_req:req().
 
 set_auth_cookies(Req, User, Cookie, Validity) ->
-	Req0 = cowboy_req:set_resp_cookie(<<"dudeauth">>, Cookie, Req,
+	Req0 = cowboy_req:set_resp_cookie(<<"?DUDEAUTH">>, Cookie, Req,
 	    #{max_age => Validity}),
-	Req1 = cowboy_req:set_resp_cookie(<<"dudename">>, User, Req0,
+	Req1 = cowboy_req:set_resp_cookie(<<"?DUDENAME">>, User, Req0,
 	    #{max_age => Validity}),
 
 	Req1.