diff --git a/lib/browserid/primary.js b/lib/browserid/primary.js
index 442f7b0465122a5a10c018c55ff70e26fa0cc38a..f2a8543d184da603b937f88bb4b4dfc33241723e 100644
--- a/lib/browserid/primary.js
+++ b/lib/browserid/primary.js
@@ -47,7 +47,7 @@ jwk = require('jwcrypto/jwk');
 const WELL_KNOWN_URL = "/.well-known/vep";
 
 // cache .well-known/vep for six hours
-const MAX_CACHE_MS = (6 * 60 * 1000);
+const MAX_CACHE_MS = (6 * 60 * 60 * 1000);
 
 function parseWellKnownBody(body, domain) {
   var v = JSON.parse(body);