diff --git a/lib/authz.js b/lib/authz.js
index 4712788..d2626a1 100644
--- a/lib/authz.js
+++ b/lib/authz.js
@@ -83,7 +83,7 @@ async function addRequestedHeaders(req, res, route, user, discoveredGroups) {
 async function getRequestHeaderMapConfig(user, route) {
     var userId = user.id
     var userGroups = user.groups
-    var requestHeaderMap = requestHeaderMapCache.get(`${userId}-${route}`)
+    var requestHeaderMap = requestHeaderMapCache.get(`${userId}-${JSON.stringify(route)}`)
     if (requestHeaderMap) {
         log.trace("Returning requestHeaderMap from cache")
         return requestHeaderMap
@@ -111,7 +111,7 @@ async function getRequestHeaderMapConfig(user, route) {
                     ...requestHeaderMap[userId],
                 }
             }
-            requestHeaderMapCache.put(`${userId}-${route}`, result)
+            requestHeaderMapCache.put(`${userId}-${JSON.stringify(route)}`, result)
             return result
         } catch (error) {
             log.error({ message: "Unable to get config for requestHeaderMap", context: { error: error.message, stack: error.stack, route: route } })