diff --git a/v4/export/block_allow_list.go b/v4/export/block_allow_list.go
index cf0c9ab4..194be0e2 100644
--- a/v4/export/block_allow_list.go
+++ b/v4/export/block_allow_list.go
@@ -8,7 +8,7 @@ import (
 	tcontext "github.com/pingcap/dumpling/v4/context"
 )
 
-func filterDataBases(tctx *tcontext.Context, conf *Config, databases []string) []string {
+func filterDatabases(tctx *tcontext.Context, conf *Config, databases []string) []string {
 	tctx.L().Debug("start to filter databases")
 	newDatabases := make([]string, 0, len(databases))
 	ignoreDatabases := make([]string, 0, len(databases))
diff --git a/v4/export/block_allow_list_test.go b/v4/export/block_allow_list_test.go
index f69bc657..845bcfba 100644
--- a/v4/export/block_allow_list_test.go
+++ b/v4/export/block_allow_list_test.go
@@ -38,10 +38,10 @@ func (s *testBWListSuite) TestFilterTables(c *C) {
 	}
 
 	databases := []string{filter.InformationSchemaName, filter.PerformanceSchemaName, "xxx", "yyy"}
-	c.Assert(filterDataBases(tctx, conf, databases), DeepEquals, databases)
+	c.Assert(filterDatabases(tctx, conf, databases), DeepEquals, databases)
 
 	conf.TableFilter = tf.NewSchemasFilter("xxx")
-	c.Assert(filterDataBases(tctx, conf, databases), DeepEquals, []string{"xxx"})
+	c.Assert(filterDatabases(tctx, conf, databases), DeepEquals, []string{"xxx"})
 	filterTables(tcontext.Background(), conf)
 	c.Assert(conf.Tables, HasLen, 1)
 	c.Assert(conf.Tables, DeepEquals, expectedDBTables)
diff --git a/v4/export/prepare.go b/v4/export/prepare.go
index 62e1a3e5..2a6d7a14 100644
--- a/v4/export/prepare.go
+++ b/v4/export/prepare.go
@@ -82,7 +82,7 @@ func prepareDumpingDatabases(tctx *tcontext.Context, conf *Config, db *sql.Conn)
 	if err != nil {
 		return nil, err
 	}
-	databases = filterDataBases(tctx, conf, databases)
+	databases = filterDatabases(tctx, conf, databases)
 	if len(conf.Databases) == 0 {
 		return databases, nil
 	}