diff --git a/CHANGES.md b/CHANGES.md
index a7af97f6..1b5c1774 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,5 +1,6 @@
 v0.11.15 - TBD
 ==============
+* Fix a bug where initialization of a duplex device fails on some backends.
 * Fix a bug in ma_gainer where smoothing isn't applied correctly thus resulting in glitching.
 * Add support for volume smoothing to sounds when changing the volume with `ma_sound_set_volume()`. To use this, you must configure it via the `volumeSmoothTimeInPCMFrames` member of ma_sound_config and use `ma_sound_init_ex()` to initialize your sound. Smoothing is disabled by default.