diff --git a/libavcodec/aacenc.c b/libavcodec/aacenc.c
index 499aefb9fe..0378f0da1a 100644
--- a/libavcodec/aacenc.c
+++ b/libavcodec/aacenc.c
@@ -705,8 +705,8 @@ static av_cold int dsp_init(AVCodecContext *avctx, AACEncContext *s)
 static av_cold int alloc_buffers(AVCodecContext *avctx, AACEncContext *s)
 {
     int ch;
-    FF_ALLOCZ_OR_GOTO(avctx, s->buffer.samples, 3 * 1024 * s->channels * sizeof(s->buffer.samples[0]), alloc_fail);
-    FF_ALLOCZ_OR_GOTO(avctx, s->cpe, sizeof(ChannelElement) * s->chan_map[0], alloc_fail);
+    FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->buffer.samples, s->channels, 3 * 1024 * sizeof(s->buffer.samples[0]), alloc_fail);
+    FF_ALLOCZ_ARRAY_OR_GOTO(avctx, s->cpe, s->chan_map[0], sizeof(ChannelElement), alloc_fail);
     FF_ALLOCZ_OR_GOTO(avctx, avctx->extradata, 5 + FF_INPUT_BUFFER_PADDING_SIZE, alloc_fail);
 
     for(ch = 0; ch < s->channels; ch++)