diff --git a/tests/src/unit-items-cpp17.cpp b/tests/src/unit-items-cpp17.cpp
index fd6233ccb..577dcea56 100644
--- a/tests/src/unit-items-cpp17.cpp
+++ b/tests/src/unit-items-cpp17.cpp
@@ -17,8 +17,8 @@
 using nlohmann::json;
 
 #ifdef JSON_HAS_CPP_17
-    #include <map>
-    #include <string>
+#include <map>
+#include <string>
 
 TEST_CASE("items()")
 {