diff --git a/mysql.go b/mysql.go
index aff13333..23b53641 100644
--- a/mysql.go
+++ b/mysql.go
@@ -111,6 +111,7 @@ func (db *mysql) SqlType(c *Column) string {
 	switch t := c.SQLType.Name; t {
 	case Bool:
 		res = TinyInt
+		c.Length = 1
 	case Serial:
 		c.IsAutoIncrement = true
 		c.IsPrimaryKey = true
@@ -259,7 +260,7 @@ func (db *mysql) GetColumns(tableName string) ([]string, map[string]*Column, err
 		if col.SQLType.IsText() {
 			if col.Default != "" {
 				col.Default = "'" + col.Default + "'"
-			}else{
+			} else {
 				if col.DefaultIsEmpty {
 					col.Default = "''"
 				}
diff --git a/session.go b/session.go
index 75570fcd..825acc46 100644
--- a/session.go
+++ b/session.go
@@ -2627,7 +2627,7 @@ func (session *Session) innerInsert(bean interface{}) (int64, error) {
 
 // Method InsertOne insert only one struct into database as a record.
 // The in parameter bean must a struct or a point to struct. The return
-// parameter is lastInsertId and error
+// parameter is inserted and error
 func (session *Session) InsertOne(bean interface{}) (int64, error) {
 	err := session.newDb()
 	if err != nil {