diff --git a/vowpalwabbit/core/include/vw/core/array_parameters_sparse.h b/vowpalwabbit/core/include/vw/core/array_parameters_sparse.h
index a9c8544e249..d5d1a611826 100644
--- a/vowpalwabbit/core/include/vw/core/array_parameters_sparse.h
+++ b/vowpalwabbit/core/include/vw/core/array_parameters_sparse.h
@@ -10,8 +10,8 @@
 
 #include <cstddef>
 #include <functional>
-#include <unordered_map>
 #include <memory>
+#include <unordered_map>
 
 namespace VW
 {