diff --git a/include/vlc_aout_mixer.h b/include/vlc_aout_mixer.h
index 8ea5dca649f7b161359cd2871094fab90379d9f9..2541cd254e21fac7279b2b6513318f2b3f7b1a70 100644
--- a/include/vlc_aout_mixer.h
+++ b/include/vlc_aout_mixer.h
@@ -44,7 +44,7 @@ struct audio_mixer
     VLC_COMMON_MEMBERS
 
     module_t *module; /**< Module handle */
-    const audio_sample_format_t *fmt; /**< Audio format */
+    vlc_fourcc_t format; /**< Audio samples format */
     void (*mix)(audio_mixer_t *, block_t *, float); /**< Amplifier */
 };
 
diff --git a/modules/audio_mixer/fixed32.c b/modules/audio_mixer/fixed32.c
index 67f345d840b0d423264a81c95ce5ca997805bd65..3827d2791300b6fa445f9e375b80e8ba2df1966d 100644
--- a/modules/audio_mixer/fixed32.c
+++ b/modules/audio_mixer/fixed32.c
@@ -44,7 +44,7 @@ static int Activate (vlc_object_t *obj)
 {
     audio_mixer_t *mixer = (audio_mixer_t *)obj;
 
-    switch (mixer->fmt->i_format)
+    switch (mixer->format)
     {
         case VLC_CODEC_FI32:
             mixer->mix = FilterFI32;
diff --git a/modules/audio_mixer/float32.c b/modules/audio_mixer/float32.c
index 2bec603cf12708daa3758af0f5b628d0b29efc83..f148b33bb45f23f1583d250f5eed4236e4890682 100644
--- a/modules/audio_mixer/float32.c
+++ b/modules/audio_mixer/float32.c
@@ -59,7 +59,7 @@ static int Create( vlc_object_t *p_this )
 {
     audio_mixer_t *p_mixer = (audio_mixer_t *)p_this;
 
-    if ( p_mixer->fmt->i_format != VLC_CODEC_FL32 )
+    if (p_mixer->format != VLC_CODEC_FL32)
         return -1;
 
     p_mixer->mix = DoWork;
diff --git a/src/audio_output/aout_internal.h b/src/audio_output/aout_internal.h
index 8844a816e8953e3824165176230c65e8841ce8a7..436435e83da3852801548724606767ebe45ad459 100644
--- a/src/audio_output/aout_internal.h
+++ b/src/audio_output/aout_internal.h
@@ -145,7 +145,7 @@ void aout_FiltersDestroyPipeline( filter_t *const *, unsigned );
 void aout_FiltersPlay( filter_t *const *, unsigned, aout_buffer_t ** );
 
 /* From mixer.c : */
-struct audio_mixer *aout_MixerNew(vlc_object_t *, const audio_sample_format_t * );
+struct audio_mixer *aout_MixerNew(vlc_object_t *, vlc_fourcc_t);
 #define aout_MixerNew(o, f) aout_MixerNew(VLC_OBJECT(o), f)
 void aout_MixerDelete(struct audio_mixer *);
 void aout_MixerRun(struct audio_mixer *, block_t *, float);
diff --git a/src/audio_output/dec.c b/src/audio_output/dec.c
index 4946a525ccfa781a2145084d06dbe84dc3f2076a..3460363f4d655ae91e3f828eb279264cf8efffac 100644
--- a/src/audio_output/dec.c
+++ b/src/audio_output/dec.c
@@ -107,7 +107,7 @@ aout_input_t *aout_DecNew( audio_output_t *p_aout,
         goto out;
 
     assert (owner->volume.mixer == NULL);
-    owner->volume.mixer = aout_MixerNew (p_aout, &owner->mixer_format);
+    owner->volume.mixer = aout_MixerNew (p_aout, owner->mixer_format.i_format);
     if (owner->volume.mixer == NULL)
     {
         aout_OutputDelete( p_aout );
diff --git a/src/audio_output/intf.c b/src/audio_output/intf.c
index 0ea9c55f0e65696b8b6a07e482d3259d32a0a4f7..8d9190b73a7e16c87726d6c602edce86b6797164 100644
--- a/src/audio_output/intf.c
+++ b/src/audio_output/intf.c
@@ -271,7 +271,7 @@ static int aout_Restart( audio_output_t * p_aout )
         return -1;
     }
 
-    owner->volume.mixer = aout_MixerNew (p_aout, &owner->mixer_format);
+    owner->volume.mixer = aout_MixerNew (p_aout, owner->mixer_format.i_format);
     if (owner->volume.mixer == NULL)
     {
         aout_OutputDelete( p_aout );
diff --git a/src/audio_output/mixer.c b/src/audio_output/mixer.c
index 3d631c2073c13ba39174e74c4a8ee84ed97db49a..b1a8b5d33b58fd0c8a037ce286cff279e00fe938 100644
--- a/src/audio_output/mixer.c
+++ b/src/audio_output/mixer.c
@@ -40,14 +40,13 @@
 /**
  * Creates a software amplifier.
  */
-audio_mixer_t *aout_MixerNew(vlc_object_t *obj,
-                             const audio_sample_format_t *fmt)
+audio_mixer_t *aout_MixerNew(vlc_object_t *obj, vlc_fourcc_t format)
 {
     audio_mixer_t *mixer = vlc_custom_create(obj, sizeof (*mixer), "mixer");
     if (unlikely(mixer == NULL))
         return NULL;
 
-    mixer->fmt = fmt;
+    mixer->format = format;
     mixer->mix = NULL;
     mixer->module = module_need(mixer, "audio mixer", NULL, false);
     if (mixer->module == NULL)