diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 4a07670c7..20abf8fd5 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -13680,8 +13680,7 @@ NLOHMANN_JSON_NAMESPACE_END
 
 #include <type_traits> // conditional, is_same
 
-namespace nlohmann
-{
+NLOHMANN_JSON_NAMESPACE_BEGIN
 namespace detail
 {