diff --git a/src/policy_cache.hpp b/src/policy_cache.hpp
index ed83a43d..b580a8a9 100644
--- a/src/policy_cache.hpp
+++ b/src/policy_cache.hpp
@@ -30,15 +30,6 @@
 
 class PolicyCache
 {
-public:
-  struct Value
-  {
-    Value();
-
-    uint64_t time;
-    StrVec   paths;
-  };
-
 public:
   PolicyCache(void);
 
@@ -58,5 +49,5 @@ public:
 
 private:
   pthread_mutex_t             _lock;
-  std::map<std::string,Value> _cache;
+  std::unordered_map<std::string,Value> _cache;
 };