diff --git a/io/io/res/json.hpp b/io/io/res/json.hpp
index 2f61619714aec206da2776a284fd2b11fb69eb9f..b8661a94b928435ea1957ae95d03df90a6dc09c2 100644
--- a/io/io/res/json.hpp
+++ b/io/io/res/json.hpp
@@ -1913,8 +1913,8 @@ class basic_json
 
     @since version 1.0.0
     */
-    basic_json(const value_t value_type)
-        : m_type(value_type), m_value(value_type)
+    basic_json(const value_t value_type_)
+        : m_type(value_type_), m_value(value_type_)
     {
         assert_invariant();
     }