diff --git a/src/json-schema-draft4.json.cpp b/src/json-schema-draft4.json.cpp
index 6cf9fee..43bab6f 100644
--- a/src/json-schema-draft4.json.cpp
+++ b/src/json-schema-draft4.json.cpp
@@ -1,6 +1,8 @@
 #include <json-schema.hpp>
 
-namespace nlohmann::json_schema_draft4
+namespace nlohmann
+{
+namespace json_schema_draft4
 {
 
 json draft4_schema_builtin = R"( {
@@ -155,3 +157,4 @@ json draft4_schema_builtin = R"( {
 } )"_json;
 
 }
+}