diff --git a/libswresample/rematrix.c b/libswresample/rematrix.c
index 9c7a6fa340..26e76a2ed8 100644
--- a/libswresample/rematrix.c
+++ b/libswresample/rematrix.c
@@ -361,7 +361,7 @@ int swri_rematrix(SwrContext *s, AudioData *out, AudioData *in, int len, int mus
     int off = 0;
 
     if(s->mix_any_f) {
-        s->mix_any_f(out->ch, in->ch, s->native_matrix, len);
+        s->mix_any_f(out->ch, (const uint8_t **)in->ch, s->native_matrix, len);
         return 0;
     }