diff --git a/libs/sysaudio/src/wasapi.zig b/libs/sysaudio/src/wasapi.zig
index eb5bfa1b..07e14a01 100644
--- a/libs/sysaudio/src/wasapi.zig
+++ b/libs/sysaudio/src/wasapi.zig
@@ -631,6 +631,8 @@ pub const Context = struct {
                 .front_left_center => win32.SPEAKER_FRONT_LEFT_OF_CENTER,
                 .front_right_center => win32.SPEAKER_FRONT_RIGHT_OF_CENTER,
                 .back_center => win32.SPEAKER_BACK_CENTER,
+                .back_left => win32.SPEAKER_BACK_LEFT,
+                .back_right => win32.SPEAKER_BACK_RIGHT,
                 .side_left => win32.SPEAKER_SIDE_LEFT,
                 .side_right => win32.SPEAKER_SIDE_RIGHT,
                 .top_center => win32.SPEAKER_TOP_CENTER,