diff --git a/aegisub/src/subtitles_provider_libass.cpp b/aegisub/src/subtitles_provider_libass.cpp
index a924d12f8..727a4debc 100644
--- a/aegisub/src/subtitles_provider_libass.cpp
+++ b/aegisub/src/subtitles_provider_libass.cpp
@@ -80,6 +80,9 @@ LibassSubtitlesProvider::LibassSubtitlesProvider() {
 //////////////
 // Destructor
 LibassSubtitlesProvider::~LibassSubtitlesProvider() {
+	ass_free_track(ass_track);
+	ass_renderer_done(ass_renderer);
+	ass_library_done(ass_library);
 }