diff --git a/include/SDL3/SDL_audio.h b/include/SDL3/SDL_audio.h
index d60364d349..4ab96e7593 100644
--- a/include/SDL3/SDL_audio.h
+++ b/include/SDL3/SDL_audio.h
@@ -977,7 +977,7 @@ extern DECLSPEC int SDLCALL SDL_UnlockAudioStream(SDL_AudioStream *stream);
  * resampling, and may change from call to call.
  *
  * \param stream The SDL audio stream associated with this callback.
- * \param additional The amount of data, in bytes, that is needed right now
+ * \param additional_amount The amount of data, in bytes, that is needed right now.
  * \param total_amount The total amount of data requested, in bytes, that is requested or available.
  * \param userdata An opaque pointer provided by the app for their personal use.
  */