diff --git a/go/config/config.default.json b/go/config/config.default.json
index 1c8f6ba..e843cd5 100644
--- a/go/config/config.default.json
+++ b/go/config/config.default.json
@@ -6,6 +6,13 @@
 		"max_size":    1024,
 		"max_age":     10
     },
+    "core_logger": {
+        "output_json": true,
+        "level":      "info",
+		"filename":   "ee-go-core.log",
+		"max_size":    1024,
+		"max_age":     10
+    },
     "http": {
         "enable": true,
         "protocol": "http://",