diff --git a/include/boost/unordered/unordered_flat_map_fwd.hpp b/include/boost/unordered/unordered_flat_map_fwd.hpp
index 2c34d0fb..275a4327 100644
--- a/include/boost/unordered/unordered_flat_map_fwd.hpp
+++ b/include/boost/unordered/unordered_flat_map_fwd.hpp
@@ -12,7 +12,6 @@
 #endif
 
 #include <boost/functional/hash_fwd.hpp>
-#include <boost/unordered/detail/fwd.hpp>
 #include <functional>
 #include <memory>
 
diff --git a/include/boost/unordered/unordered_flat_set_fwd.hpp b/include/boost/unordered/unordered_flat_set_fwd.hpp
index 51f534ef..9e670b22 100644
--- a/include/boost/unordered/unordered_flat_set_fwd.hpp
+++ b/include/boost/unordered/unordered_flat_set_fwd.hpp
@@ -12,7 +12,6 @@
 #endif
 
 #include <boost/functional/hash_fwd.hpp>
-#include <boost/unordered/detail/fwd.hpp>
 #include <functional>
 #include <memory>
 
diff --git a/include/boost/unordered/unordered_map_fwd.hpp b/include/boost/unordered/unordered_map_fwd.hpp
index d713cc49..46be934a 100644
--- a/include/boost/unordered/unordered_map_fwd.hpp
+++ b/include/boost/unordered/unordered_map_fwd.hpp
@@ -13,7 +13,6 @@
 #endif
 
 #include <boost/functional/hash_fwd.hpp>
-#include <boost/unordered/detail/fwd.hpp>
 #include <functional>
 #include <memory>
 
diff --git a/include/boost/unordered/unordered_node_map_fwd.hpp b/include/boost/unordered/unordered_node_map_fwd.hpp
index 0e08a905..35da84ba 100644
--- a/include/boost/unordered/unordered_node_map_fwd.hpp
+++ b/include/boost/unordered/unordered_node_map_fwd.hpp
@@ -12,7 +12,6 @@
 #endif
 
 #include <boost/functional/hash_fwd.hpp>
-#include <boost/unordered/detail/fwd.hpp>
 #include <functional>
 #include <memory>
 
diff --git a/include/boost/unordered/unordered_node_set_fwd.hpp b/include/boost/unordered/unordered_node_set_fwd.hpp
index bdd7fd0b..9f87badc 100644
--- a/include/boost/unordered/unordered_node_set_fwd.hpp
+++ b/include/boost/unordered/unordered_node_set_fwd.hpp
@@ -12,7 +12,6 @@
 #endif
 
 #include <boost/functional/hash_fwd.hpp>
-#include <boost/unordered/detail/fwd.hpp>
 #include <functional>
 #include <memory>
 
diff --git a/include/boost/unordered/unordered_set_fwd.hpp b/include/boost/unordered/unordered_set_fwd.hpp
index 3cd34bc9..3722d25a 100644
--- a/include/boost/unordered/unordered_set_fwd.hpp
+++ b/include/boost/unordered/unordered_set_fwd.hpp
@@ -13,7 +13,6 @@
 #endif
 
 #include <boost/functional/hash_fwd.hpp>
-#include <boost/unordered/detail/fwd.hpp>
 #include <functional>
 #include <memory>
 
diff --git a/test/helpers/unordered.hpp b/test/helpers/unordered.hpp
index d3cbf17f..2f84dea9 100644
--- a/test/helpers/unordered.hpp
+++ b/test/helpers/unordered.hpp
@@ -14,6 +14,7 @@
 #include <boost/unordered/unordered_node_map.hpp>
 #include <boost/unordered/unordered_node_set.hpp>
 #include <boost/unordered/detail/implementation.hpp>
+#include <boost/unordered/detail/fwd.hpp>
 #else
 #include <boost/unordered_set.hpp>
 #include <boost/unordered_map.hpp>