diff --git a/test/test.cpp b/test/test.cpp
index 5f5ed45..f933b76 100644
--- a/test/test.cpp
+++ b/test/test.cpp
@@ -4,6 +4,7 @@
 
 #include "doctest/doctest.h"
 
+#define JSON_USE_IMPLICIT_CONVERSIONS 0
 #define JSON_NO_IO 1
 #include "inja/inja.hpp"