diff --git a/abogen/conversion.py b/abogen/conversion.py
index a3a95ad..1e6b262 100644
--- a/abogen/conversion.py
+++ b/abogen/conversion.py
@@ -775,7 +775,7 @@ class ConversionThread(QThread):
                             # Generate ASS subtitle
                             is_centered = subtitle_format in ("ass_centered_wide", "ass_centered_narrow")
                             is_narrow = subtitle_format in ("ass_narrow", "ass_centered_narrow")
-                            self._write_ass_subtitle(chapter_subtitle_path, chapter_subtitle_entries, is_centered, is_narrow)
+                            self._write_ass_subtitle(subtitle_path, subtitle_entries, is_centered, is_narrow)
                         else:
                             # Generate SRT subtitle (default)
                             with open(subtitle_path, "w", encoding="utf-8", errors="replace") as srt_file: