diff --git a/include/boost/pfr/detail/core17.hpp b/include/boost/pfr/detail/core17.hpp
index a182d70..16a2c15 100644
--- a/include/boost/pfr/detail/core17.hpp
+++ b/include/boost/pfr/detail/core17.hpp
@@ -8,6 +8,7 @@
 #define BOOST_PFR_DETAIL_CORE17_HPP
 
 #include <boost/pfr/detail/core17_generated.hpp>
+#include <boost/pfr/detail/fields_count.hpp>
 #include <boost/pfr/detail/for_each_field_impl.hpp>
 #include <boost/pfr/detail/rvalue_t.hpp>
 
diff --git a/include/boost/pfr/detail/core17_generated.hpp b/include/boost/pfr/detail/core17_generated.hpp
index 6638ce2..5bd7e1b 100644
--- a/include/boost/pfr/detail/core17_generated.hpp
+++ b/include/boost/pfr/detail/core17_generated.hpp
@@ -20,7 +20,6 @@
 
 #include <boost/pfr/detail/sequence_tuple.hpp>
 #include <boost/pfr/detail/size_t_.hpp>
-#include <boost/pfr/detail/fields_count.hpp>
 
 namespace boost { namespace pfr { namespace detail {
 
diff --git a/misc/generate_cpp17.py b/misc/generate_cpp17.py
index ae4dc75..340f89c 100644
--- a/misc/generate_cpp17.py
+++ b/misc/generate_cpp17.py
@@ -35,7 +35,6 @@ PROLOGUE = """// Copyright (c) 2016-2020 Antony Polukhin
 
 #include <boost/pfr/detail/sequence_tuple.hpp>
 #include <boost/pfr/detail/size_t_.hpp>
-#include <boost/pfr/detail/fields_count.hpp>
 
 namespace boost { namespace pfr { namespace detail {