diff --git a/vpx/vpx_frame_buffer.h b/vpx/vpx_frame_buffer.h
index ad70cdd57..ac17c529d 100644
--- a/vpx/vpx_frame_buffer.h
+++ b/vpx/vpx_frame_buffer.h
@@ -57,7 +57,7 @@ typedef struct vpx_codec_frame_buffer {
  * return 0. Any failure the callback must return a value less than 0.
  *
  * \param[in] priv         Callback's private data
- * \param[in] new_size     Size in bytes needed by the buffer
+ * \param[in] min_size     Size in bytes needed by the buffer
  * \param[in,out] fb       Pointer to vpx_codec_frame_buffer_t
  */
 typedef int (*vpx_get_frame_buffer_cb_fn_t)(void *priv, size_t min_size,