diff --git a/apps/openmw/mwsound/ffmpeg_decoder.cpp b/apps/openmw/mwsound/ffmpeg_decoder.cpp
index ec36a5cdf8..0a9641635f 100644
--- a/apps/openmw/mwsound/ffmpeg_decoder.cpp
+++ b/apps/openmw/mwsound/ffmpeg_decoder.cpp
@@ -221,7 +221,7 @@ void FFmpeg_Decoder::open(const std::string &fname)
         if(!mStream)
             throw std::runtime_error("No audio streams in "+fname);
 
-        AVCodec *codec = avcodec_find_decoder((*mStream)->codecpar->codec_id);
+        const AVCodec *codec = avcodec_find_decoder((*mStream)->codecpar->codec_id);
         if(!codec)
         {
             std::string ss = "No codec found for id " +
diff --git a/extern/osg-ffmpeg-videoplayer/audiodecoder.cpp b/extern/osg-ffmpeg-videoplayer/audiodecoder.cpp
index b5b3b8a3e0..decf57e4df 100644
--- a/extern/osg-ffmpeg-videoplayer/audiodecoder.cpp
+++ b/extern/osg-ffmpeg-videoplayer/audiodecoder.cpp
@@ -71,7 +71,7 @@ MovieAudioDecoder::MovieAudioDecoder(VideoState* videoState)
 {
     mAudioResampler.reset(new AudioResampler());
 
-    AVCodec *codec = avcodec_find_decoder(mAVStream->codecpar->codec_id);
+    const AVCodec *codec = avcodec_find_decoder(mAVStream->codecpar->codec_id);
     if(!codec)
     {
         std::string ss = "No codec found for id " +
diff --git a/extern/osg-ffmpeg-videoplayer/videostate.cpp b/extern/osg-ffmpeg-videoplayer/videostate.cpp
index c3cb412e9a..7b4060753e 100644
--- a/extern/osg-ffmpeg-videoplayer/videostate.cpp
+++ b/extern/osg-ffmpeg-videoplayer/videostate.cpp
@@ -632,7 +632,7 @@ bool VideoState::update()
 
 int VideoState::stream_open(int stream_index, AVFormatContext *pFormatCtx)
 {
-    AVCodec *codec;
+    const AVCodec *codec;
 
     if(stream_index < 0 || stream_index >= static_cast<int>(pFormatCtx->nb_streams))
         return -1;