diff --git a/indexer/feature_utils.hpp b/indexer/feature_utils.hpp
index dea7158..4c9253a 100644
--- a/indexer/feature_utils.hpp
+++ b/indexer/feature_utils.hpp
@@ -4,7 +4,6 @@
 
 #include "base/base.hpp"
 
-#include <vector>
 #include <vector>
 
 struct FeatureID;