diff --git a/include/boost/unordered/detail/foa/concurrent_table.hpp b/include/boost/unordered/detail/foa/concurrent_table.hpp
index 15aec185..4a536de0 100644
--- a/include/boost/unordered/detail/foa/concurrent_table.hpp
+++ b/include/boost/unordered/detail/foa/concurrent_table.hpp
@@ -431,7 +431,7 @@ class concurrent_table:
   using arrays_type=typename super::arrays_type;
   using size_ctrl_type=typename super::size_ctrl_type;
   using compatible_nonconcurrent_table=table<TypePolicy,Hash,Pred,Allocator>;
-  friend class compatible_nonconcurrent_table;
+  friend compatible_nonconcurrent_table;
 
 public:
   using key_type=typename super::key_type;
diff --git a/include/boost/unordered/detail/foa/table.hpp b/include/boost/unordered/detail/foa/table.hpp
index d8968623..7c462d01 100644
--- a/include/boost/unordered/detail/foa/table.hpp
+++ b/include/boost/unordered/detail/foa/table.hpp
@@ -292,7 +292,7 @@ class table:table_core_impl<TypePolicy,Hash,Pred,Allocator>
   using locator=typename super::locator;
   using compatible_concurrent_table=
     concurrent_table<TypePolicy,Hash,Pred,Allocator>;
-  friend class compatible_concurrent_table;
+  friend compatible_concurrent_table;
 
 public:
   using key_type=typename super::key_type;