diff --git a/migrator.go b/migrator.go
index 4d6ca18..5660d6d 100644
--- a/migrator.go
+++ b/migrator.go
@@ -144,7 +144,7 @@ func (m Migrator) RenameColumn(value interface{}, oldName, newName string) error
 	})
 }
 
-var defaultValueTrimRegexp = regexp.MustCompile("^\\('?(.*)'?\\)$")
+var defaultValueTrimRegexp = regexp.MustCompile("^\\('?([^']*)'?\\)$")
 
 // ColumnTypes return columnTypes []gorm.ColumnType and execErr error
 func (m Migrator) ColumnTypes(value interface{}) ([]gorm.ColumnType, error) {