diff --git a/src/transcription-filter-data.h b/src/transcription-filter-data.h
index 92c24a3..cb83d96 100644
--- a/src/transcription-filter-data.h
+++ b/src/transcription-filter-data.h
@@ -55,16 +55,16 @@ struct transcription_filter_data {
 	// Text source to output the subtitles
 	obs_weak_source_t *text_source;
 	char *text_source_name;
-	std::unique_ptr<std::mutex> text_source_mutex;
+	std::mutex *text_source_mutex;
 	// Callback to set the text in the output text source (subtitles)
 	std::function<void(const std::string &str)> setTextCallback;
 
 	// Use std for thread and mutex
 	std::thread whisper_thread;
 
-	std::unique_ptr<std::mutex> whisper_buf_mutex;
-	std::unique_ptr<std::mutex> whisper_ctx_mutex;
-	std::unique_ptr<std::condition_variable> wshiper_thread_cv;
+	std::mutex *whisper_buf_mutex;
+	std::mutex *whisper_ctx_mutex;
+	std::condition_variable *wshiper_thread_cv;
 };
 
 // Audio packet info
diff --git a/src/transcription-filter.cpp b/src/transcription-filter.cpp
index bb015f8..11f3324 100644
--- a/src/transcription-filter.cpp
+++ b/src/transcription-filter.cpp
@@ -138,6 +138,11 @@ void transcription_filter_destroy(void *data)
 	}
 	circlebuf_free(&gf->info_buffer);
 
+	delete gf->whisper_buf_mutex;
+	delete gf->whisper_ctx_mutex;
+	delete gf->wshiper_thread_cv;
+	delete gf->text_source_mutex;
+
 	bfree(gf);
 }
 
@@ -330,10 +335,10 @@ void *transcription_filter_create(obs_data_t *settings, obs_source_t *filter)
 	gf->resampler = audio_resampler_create(&dst, &src);
 
 	obs_log(LOG_INFO, "transcription_filter: setup mutexes and condition variables");
-	gf->whisper_buf_mutex.reset(new std::mutex());
-	gf->whisper_ctx_mutex.reset(new std::mutex());
-	gf->wshiper_thread_cv.reset(new std::condition_variable());
-	gf->text_source_mutex.reset(new std::mutex());
+	gf->whisper_buf_mutex = new std::mutex();
+	gf->whisper_ctx_mutex = new std::mutex();
+	gf->wshiper_thread_cv = new std::condition_variable();
+	gf->text_source_mutex = new std::mutex();
 	gf->text_source = nullptr;
 	gf->text_source_name = nullptr;