diff --git a/loop.go b/loop.go
index 41cf921..17bb30d 100644
--- a/loop.go
+++ b/loop.go
@@ -164,11 +164,18 @@ func (ss *session) Loop(ctx context.Context, commandIn commandIn) error {
 			err = doSelect(ctx, ss, query, nil, commandIn)
 		case "ROLLBACK":
 			misc.Echo(ss.spool, query)
-			arg, _ = misc.CutField(arg)
+			var rest string
+			arg, rest = misc.CutField(arg)
 			if arg == "" {
 				err = ss.rollback()
-			} else if strings.EqualFold(arg, "TO") || strings.EqualFold(arg, "TRANSACTION") {
+			} else if strings.EqualFold(arg, "TO") {
 				err = doTCL(ctx, ss, query)
+			} else if strings.EqualFold(arg, "TRANSACTION") {
+				if strings.TrimSpace(rest) == "" {
+					err = ss.rollback()
+				} else {
+					err = doTCL(ctx, ss, query)
+				}
 			} else {
 				err = ErrInvalidRollback
 			}
diff --git a/release_note_en.md b/release_note_en.md
index 4dfb323..2dea3f4 100644
--- a/release_note_en.md
+++ b/release_note_en.md
@@ -3,6 +3,7 @@
 ### Bug fixes
 
 - Fix: Errors were not reported during execution of `SAVEPOINT` and `SAVE TRANSACTION`. (#19)
+- SQL Server: Fixed an issue where `ROLLBACK TRANSACTION` without a savepoint was not recognized as ending the transaction, causing the prompt to remain as `SQL*`. (#22)
 
 ### Specification Changes
 
diff --git a/release_note_ja.md b/release_note_ja.md
index dac6fc8..733360a 100644
--- a/release_note_ja.md
+++ b/release_note_ja.md
@@ -3,6 +3,7 @@
 ### 不具合修正
 
 - `SAVEPOINT`, `SAVE TRANSACTION` の実行中にエラーが発生してもメッセージが表示されなかった問題を修正 (#19)
+- SQL Server: SAVEPOINT を指定しない `ROLLBACK TRANSACTION` でトランザクションは終了するのに、それを認識せず、プロンプトがトランザクション中を意味する `SQL*` のままになっていた問題を修正 (#22)
 
 ### 仕様変更