diff --git a/libswresample/swresample.c b/libswresample/swresample.c
index 9b1647d607..f9674d1f7a 100644
--- a/libswresample/swresample.c
+++ b/libswresample/swresample.c
@@ -428,8 +428,8 @@ static int resample(SwrContext *s, AudioData *out_param, int out_count,
     return ret_sum;
 }
 
-static int swr_convert_internal(struct SwrContext *s, AudioData *out[SWR_CH_MAX], int out_count,
-                                                      AudioData *in [SWR_CH_MAX], int  in_count){
+static int swr_convert_internal(struct SwrContext *s, AudioData *out, int out_count,
+                                                      AudioData *in , int  in_count){
     AudioData *postin, *midbuf, *preout;
     int ret/*, in_max*/;
     AudioData preout_tmp, midbuf_tmp;