diff --git a/include/boost/static_string/config.hpp b/include/boost/static_string/config.hpp
index 73bdfc0..90cc218 100644
--- a/include/boost/static_string/config.hpp
+++ b/include/boost/static_string/config.hpp
@@ -139,10 +139,10 @@ defined(__clang__) && \
 #endif
 
 #ifndef BOOST_STATIC_STRING_STANDALONE
-#include <boost/utility/string_view.hpp>
-#include <boost/container_hash/hash.hpp>
 #include <boost/assert.hpp>
+#include <boost/container_hash/hash.hpp>
 #include <boost/static_assert.hpp>
+#include <boost/utility/string_view.hpp>
 #include <boost/throw_exception.hpp>
 #else
 #include <cassert>
diff --git a/include/boost/static_string/static_string.hpp b/include/boost/static_string/static_string.hpp
index 51d5776..6436eb6 100644
--- a/include/boost/static_string/static_string.hpp
+++ b/include/boost/static_string/static_string.hpp
@@ -14,6 +14,8 @@
 #include <boost/static_string/config.hpp>
 #include <algorithm>
 #include <cstdint>
+#include <cstdio>
+#include <functional>
 #include <initializer_list>
 #include <iosfwd>
 #include <type_traits>