diff --git a/appsrc/baseservice/db/base/keyvaldb.cpp b/appsrc/baseservice/db/base/keyvaldb.cpp
index b0e7179..7344e19 100644
--- a/appsrc/baseservice/db/base/keyvaldb.cpp
+++ b/appsrc/baseservice/db/base/keyvaldb.cpp
@@ -27,7 +27,7 @@ void KeyvalDBDao::initialize(string dbname, string tableName) {
   this->tableName = tableName;
   do {
     try {
-      logger->info("init setting db");
+      logger->info("init keyval db: {}-{}", dbname, tableName);
       auto storage = STORAGE();
       storage.sync_schema();
     } catch (const std::exception& e) {
diff --git a/appsrc/baseservice/db/formula_db_dao.cpp b/appsrc/baseservice/db/formula_db_dao.cpp
index 5ac069a..721295e 100644
--- a/appsrc/baseservice/db/formula_db_dao.cpp
+++ b/appsrc/baseservice/db/formula_db_dao.cpp
@@ -48,6 +48,6 @@ json FormulaDBDao::newFormula() {
       formula[string(setting->setting_id)] = setting->default_val;
     }
   }
-  keyvaldb.set(formula["formula_id"], formula);
+  keyvaldb.set(formula["formula_id"], formula.dump());
   return formula;
 }