diff --git a/test/js-native-api/test_string/binding.gyp b/test/js-native-api/test_string/binding.gyp
index 63fec1ae3b5375..7fc4d9c24226d4 100644
--- a/test/js-native-api/test_string/binding.gyp
+++ b/test/js-native-api/test_string/binding.gyp
@@ -5,7 +5,10 @@
       "sources": [
         "test_string.c",
         "test_null.c",
-      ]
-    }
-  ]
+      ],
+      "defines": [
+        "NAPI_EXPERIMENTAL",
+      ],
+    },
+  ],
 }
diff --git a/test/js-native-api/test_string/test_string.c b/test/js-native-api/test_string/test_string.c
index 6a1ec774c376f9..48d70bedde554b 100644
--- a/test/js-native-api/test_string/test_string.c
+++ b/test/js-native-api/test_string/test_string.c
@@ -1,8 +1,7 @@
+#include <js_native_api.h>
 #include <limits.h>  // INT_MAX
 #include <stdlib.h>
 #include <string.h>
-#define NAPI_EXPERIMENTAL
-#include <js_native_api.h>
 #include "../common.h"
 #include "../entry_point.h"
 #include "test_null.h"