diff --git a/src/audio/omx.c b/src/audio/omx.c
index 60b120a..9fa9d8c 100644
--- a/src/audio/omx.c
+++ b/src/audio/omx.c
@@ -123,6 +123,7 @@ static int omx_renderer_init(int audioConfiguration, POPUS_MULTISTREAM_CONFIGURA
   }
   OMX_CONFIG_BRCMAUDIODESTINATIONTYPE arDest;
 
+  char* audio_device = (char*) context;
   if (audio_device == NULL)
     audio_device = "hdmi";
 
diff --git a/src/video/imx.c b/src/video/imx.c
index 3d7476f..bf51f1d 100644
--- a/src/video/imx.c
+++ b/src/video/imx.c
@@ -115,7 +115,7 @@ static int frame_handle(int pipefd) {
   return LOOP_OK;
 }
 
-int void decoder_renderer_setup(int videoFormat, int width, int height, int redrawRate, void* context, int drFlags) {
+int decoder_renderer_setup(int videoFormat, int width, int height, int redrawRate, void* context, int drFlags) {
   if (videoFormat != VIDEO_FORMAT_H264) {
     fprintf(stderr, "Video format not supported\n");
     return -1;
diff --git a/src/video/pi.c b/src/video/pi.c
index bc3dec7..bb91503 100644
--- a/src/video/pi.c
+++ b/src/video/pi.c
@@ -53,7 +53,7 @@ static unsigned char *dest;
 static int port_settings_changed;
 static int first_packet;
 
-int void decoder_renderer_setup(int videoFormat, int width, int height, int redrawRate, void* context, int drFlags) {
+int decoder_renderer_setup(int videoFormat, int width, int height, int redrawRate, void* context, int drFlags) {
   if (videoFormat != VIDEO_FORMAT_H264) {
     fprintf(stderr, "Video format not supported\n");
     return -1;