diff --git a/include/SDL_audio.h b/include/SDL_audio.h
index 0ebf9ebbd..4714c1753 100644
--- a/include/SDL_audio.h
+++ b/include/SDL_audio.h
@@ -437,6 +437,8 @@ extern DECLSPEC const char *SDLCALL SDL_GetAudioDeviceName(int index,
  * \param spec The SDL_AudioSpec to be initialized by this function.
  * \returns 0 on success, nonzero on error
  *
+ * \since This function is available since SDL 2.0.16.
+ *
  * \sa SDL_GetNumAudioDevices
  */
 extern DECLSPEC int SDLCALL SDL_GetAudioDeviceSpec(int index,
diff --git a/include/SDL_video.h b/include/SDL_video.h
index 747452547..93e16592f 100644
--- a/include/SDL_video.h
+++ b/include/SDL_video.h
@@ -1527,6 +1527,8 @@ extern DECLSPEC int SDLCALL SDL_SetWindowHitTest(SDL_Window * window,
  * \param operation the flash operation
  * \returns 0 on success or a negative error code on failure; call
  *          SDL_GetError() for more information.
+ *
+ * \since This function is available since SDL 2.0.16.
  */
 extern DECLSPEC int SDLCALL SDL_FlashWindow(SDL_Window * window, SDL_FlashOperation operation);