diff --git a/src/policy_cache.hpp b/src/policy_cache.hpp
index 7db2dade..18c24fd1 100644
--- a/src/policy_cache.hpp
+++ b/src/policy_cache.hpp
@@ -51,14 +51,15 @@ public:
 public:
   const
   char*
-  insert(const char        *key_,
+  insert(char const        *key_,
+         size_t const       keylen_,
          std::string const &val_)
   {
     uint64_t hash;
     const char *ptr;
     STRPOOL_U64 token;
 
-    hash = wyhash(key_.c_str(),key_.size(),0xdeadbeef,_wyp);
+    hash = wyhash(key_,key_.size(),0xdeadbeef,_wyp);
     token = strpool_inject(&_strpool,val_.c_str(),val_.size());
     ptr   = strpool_cstr(&_strpool,token);
     _cache.insert_or_assign(hash,ptr);