diff --git a/libavcodec/cook.c b/libavcodec/cook.c
index 9a290c3d40..6376ead4bf 100644
--- a/libavcodec/cook.c
+++ b/libavcodec/cook.c
@@ -364,7 +364,7 @@ static av_cold int cook_decode_close(AVCodecContext *avctx)
 /**
  * Fill the gain array for the timedomain quantization.
  *
- * @param q                 pointer to the COOKContext
+ * @param gb        pointer to the GetBitContext
  * @param gaininfo  array of gain indexes
  */