diff --git a/migrator/migrator.go b/migrator/migrator.go
index 53fd5ac0..4b069c8a 100644
--- a/migrator/migrator.go
+++ b/migrator/migrator.go
@@ -71,7 +71,7 @@ func (m Migrator) FullDataTypeOf(field *schema.Field) (expr clause.Expr) {
 			defaultStmt := &gorm.Statement{Vars: []interface{}{field.DefaultValueInterface}}
 			m.Dialector.BindVarTo(defaultStmt, defaultStmt, field.DefaultValueInterface)
 			expr.SQL += " DEFAULT " + m.Dialector.Explain(defaultStmt.SQL.String(), field.DefaultValueInterface)
-		} else {
+		} else if field.DefaultValue != "(-)" {
 			expr.SQL += " DEFAULT " + field.DefaultValue
 		}
 	}