diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index db32734040..edc1a22d17 100644
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -1008,12 +1008,10 @@ static int cook_decode_frame(AVCodecContext *avctx,
     /* estimate subpacket sizes */
     q->subpacket[0].size = avctx->block_align;
 
-    if(q->num_subpackets > 1){
         for(i=1;i<q->num_subpackets;i++){
             q->subpacket[i].size = 2 * buf[avctx->block_align - q->num_subpackets + i];
             q->subpacket[0].size -= (q->subpacket[i].size + 1);
         }
-    }
 
     /* decode supbackets */
     *data_size = 0;