diff --git a/parser/ast/misc.go b/parser/ast/misc.go
index 08fba6a3cccd8..38c465568634a 100644
--- a/parser/ast/misc.go
+++ b/parser/ast/misc.go
@@ -619,7 +619,6 @@ const (
 func (n CompletionType) Restore(ctx *format.RestoreCtx) error {
 	switch n {
 	case CompletionTypeDefault:
-		return nil
 	case CompletionTypeChain:
 		ctx.WriteKeyWord(" AND CHAIN")
 	case CompletionTypeRelease: