diff --git a/abogen/domain/enums.py b/abogen/domain/enums.py
index c002f3b..5345f5b 100644
--- a/abogen/domain/enums.py
+++ b/abogen/domain/enums.py
@@ -18,7 +18,7 @@ class SubtitleMode(str, Enum):
     LINE = "Line"
     SENTENCE = "Sentence"
     SENTENCE_COMMA = "Sentence + Comma"
-    SENTENCE_HIGHLIGHTING = "Sentence + Highlighting"
+    SENTENCE_HIGHLIGHT = "Sentence + Highlighting"
 
     @classmethod
     def from_str(cls, value: str) -> SubtitleMode:
@@ -71,6 +71,7 @@ class SubtitleFormat(str, Enum):
     """Subtitle file format."""
     SRT = "srt"
     ASS = "ass"
+    VTT = "vtt"
 
     @property
     def dot_ext(self) -> str:
diff --git a/abogen/domain/subtitle_generation.py b/abogen/domain/subtitle_generation.py
index cfb461f..e74b9b6 100644
--- a/abogen/domain/subtitle_generation.py
+++ b/abogen/domain/subtitle_generation.py
@@ -57,7 +57,7 @@ def process_subtitle_tokens(
         and subtitle_mode in [SubtitleMode.SENTENCE, SubtitleMode.SENTENCE_COMMA]
     )
 
-    if subtitle_mode == SubtitleMode.SENTENCE_HIGHLIGHTING:
+    if subtitle_mode == SubtitleMode.SENTENCE_HIGHLIGHT:
         _process_karaoke_highlighting(
             processed_tokens, subtitle_entries, max_subtitle_words, fallback_end_time
         )
diff --git a/abogen/infrastructure/subtitle_writer.py b/abogen/infrastructure/subtitle_writer.py
index dcf9610..bbca5b4 100644
--- a/abogen/infrastructure/subtitle_writer.py
+++ b/abogen/infrastructure/subtitle_writer.py
@@ -6,23 +6,10 @@ from enum import Enum
 from pathlib import Path
 from typing import List, Optional, TextIO
 
+from abogen.domain.enums import SubtitleFormat, SubtitleMode
 from abogen.subtitle_utils import clean_subtitle_text
 
 
-class SubtitleFormat(Enum):
-    SRT = "srt"
-    ASS = "ass"
-    VTT = "vtt"
-
-
-class SubtitleMode(Enum):
-    DISABLED = "Disabled"
-    LINE = "Line"
-    SENTENCE = "Sentence"
-    SENTENCE_COMMA = "Sentence + Comma"
-    SENTENCE_HIGHLIGHT = "Sentence + Highlighting"
-
-
 class SubtitleAlignment(Enum):
     LEFT = "left"
     CENTER = "center"