diff --git a/stb_image.h b/stb_image.h
index 87b8a07..563a857 100644
--- a/stb_image.h
+++ b/stb_image.h
@@ -6952,7 +6952,8 @@ STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int
 /*
    revision history:
       2.15  (2017-03-18) fix png-1,2,4 bug; now all Imagenet JPGs decode;
-                         warning fixes; disable run-time SSE detection on gcc
+                         warning fixes; disable run-time SSE detection on gcc;
+                         uniform handling of optional "return" values
       2.14  (2017-03-03) remove deprecated STBI_JPEG_OLD; fixes for Imagenet JPGs
       2.13  (2016-11-29) add 16-bit API, only supported for PNG right now
       2.12  (2016-04-02) fix typo in 2.11 PSD fix that caused crashes