diff --git a/CHANGELOG.md b/CHANGELOG.md
index bc9322e7c0..850a271008 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,7 @@ Please mark all change in change log and use the ticket from JIRA.
 - \#668 - Update badge of README
 - \#670 - Random failure of unittest db_test::SEARCH_TEST
 - \#674 - Server down in stability test
+- \#696 - Metric_type changed from IP to L2
 - \#705 - Fix search SQ8H crash without GPU resource
 
 ## Feature
diff --git a/core/src/db/meta/MySQLMetaImpl.cpp b/core/src/db/meta/MySQLMetaImpl.cpp
index 5072df9cad..51a642aa11 100644
--- a/core/src/db/meta/MySQLMetaImpl.cpp
+++ b/core/src/db/meta/MySQLMetaImpl.cpp
@@ -1138,8 +1138,6 @@ MySQLMetaImpl::DropTableIndex(const std::string& table_id) {
             // set table index type to raw
             dropTableIndexQuery << "UPDATE " << META_TABLES
                                 << " SET engine_type = " << std::to_string(DEFAULT_ENGINE_TYPE)
-                                << " ,nlist = " << std::to_string(DEFAULT_NLIST)
-                                << " ,metric_type = " << std::to_string(DEFAULT_METRIC_TYPE)
                                 << " WHERE table_id = " << mysqlpp::quote << table_id << ";";
 
             ENGINE_LOG_DEBUG << "MySQLMetaImpl::DropTableIndex: " << dropTableIndexQuery.str();
diff --git a/core/src/db/meta/SqliteMetaImpl.cpp b/core/src/db/meta/SqliteMetaImpl.cpp
index 6a525d27d2..edd8187ba9 100644
--- a/core/src/db/meta/SqliteMetaImpl.cpp
+++ b/core/src/db/meta/SqliteMetaImpl.cpp
@@ -733,9 +733,7 @@ SqliteMetaImpl::DropTableIndex(const std::string& table_id) {
         //set table index type to raw
         ConnectorPtr->update_all(
             set(
-                c(&TableSchema::engine_type_) = DEFAULT_ENGINE_TYPE,
-                c(&TableSchema::nlist_) = DEFAULT_NLIST,
-                c(&TableSchema::metric_type_) = DEFAULT_METRIC_TYPE),
+                c(&TableSchema::engine_type_) = DEFAULT_ENGINE_TYPE),
             where(
                 c(&TableSchema::table_id_) == table_id));