diff --git a/cmvr-es/devices/speaker/ffmpeg_speaker/src/ffmpeg_speaker.cpp b/cmvr-es/devices/speaker/ffmpeg_speaker/src/ffmpeg_speaker.cpp
index a0c25b3b..1153e3a3 100644
--- a/cmvr-es/devices/speaker/ffmpeg_speaker/src/ffmpeg_speaker.cpp
+++ b/cmvr-es/devices/speaker/ffmpeg_speaker/src/ffmpeg_speaker.cpp
@@ -315,7 +315,7 @@ void ffmpegSpeaker::decode_audio_() {
         return;
     }
 
-    AVCodec* decoder = nullptr;
+    const AVCodec* decoder = nullptr;
     const int stream_index = av_find_best_stream(fmt_ctx.get(), AVMEDIA_TYPE_AUDIO, -1, -1, &decoder, 0);
     if (stream_index < 0) {
         {