diff --git a/dialects/filter.go b/dialects/filter.go
index 0722363f..4c33a100 100644
--- a/dialects/filter.go
+++ b/dialects/filter.go
@@ -47,7 +47,6 @@ func (s *QuoteFilter) Do(sql string) string {
 		}
 	}
 	return buf.String()
-
 }
 
 // SeqFilter filter SQL replace ?, ? ... to $1, $2 ...
@@ -72,7 +71,6 @@ func convertQuestionMark(sql, prefix string, start int) string {
 		}
 	}
 	return buf.String()
-
 }
 
 func (s *SeqFilter) Do(sql string) string {
diff --git a/dialects/mssql.go b/dialects/mssql.go
index 8d092886..261acf97 100644
--- a/dialects/mssql.go
+++ b/dialects/mssql.go
@@ -210,7 +210,6 @@ var (
 
 type mssql struct {
 	Base
-	quoter schemas.Quoter
 }
 
 func (db *mssql) Init(d *core.DB, uri *URI) error {