diff --git a/apisix/plugins/opentelemetry.lua b/apisix/plugins/opentelemetry.lua
index b78a2d74406f..0b6df75c82c9 100644
--- a/apisix/plugins/opentelemetry.lua
+++ b/apisix/plugins/opentelemetry.lua
@@ -192,7 +192,7 @@ local _M = {
     priority = 12009,
     name = plugin_name,
     schema = schema,
-     metadata_schema = metadata_schema,
+    metadata_schema = metadata_schema,
 }