diff --git a/src/policy_cache.cpp b/src/policy_cache.cpp
index a62b0e4a..d37849d6 100644
--- a/src/policy_cache.cpp
+++ b/src/policy_cache.cpp
@@ -1 +1 @@
-#include <boost/unordered/unordered_flat_map.hpp>
+#include "policy_cache.hpp"