diff --git a/sys/wasapi2/gstwasapi2client.cpp b/sys/wasapi2/gstwasapi2client.cpp
index 8b8c0477b4..5f3d300264 100644
--- a/sys/wasapi2/gstwasapi2client.cpp
+++ b/sys/wasapi2/gstwasapi2client.cpp
@@ -41,6 +41,51 @@
 #include <locale>
 #include <codecvt>
 
+/* Desktop only defines */
+#ifndef KSAUDIO_SPEAKER_MONO
+#define KSAUDIO_SPEAKER_MONO            (SPEAKER_FRONT_CENTER)
+#endif
+#ifndef KSAUDIO_SPEAKER_1POINT1
+#define KSAUDIO_SPEAKER_1POINT1         (SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY)
+#endif
+#ifndef KSAUDIO_SPEAKER_STEREO
+#define KSAUDIO_SPEAKER_STEREO          (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT)
+#endif
+#ifndef KSAUDIO_SPEAKER_2POINT1
+#define KSAUDIO_SPEAKER_2POINT1         (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_LOW_FREQUENCY)
+#endif
+#ifndef KSAUDIO_SPEAKER_3POINT0
+#define KSAUDIO_SPEAKER_3POINT0         (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER)
+#endif
+#ifndef KSAUDIO_SPEAKER_3POINT1
+#define KSAUDIO_SPEAKER_3POINT1         (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | \
+                                         SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY)
+#endif
+#ifndef KSAUDIO_SPEAKER_QUAD
+#define KSAUDIO_SPEAKER_QUAD            (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | \
+                                         SPEAKER_BACK_LEFT  | SPEAKER_BACK_RIGHT)
+#endif
+#define KSAUDIO_SPEAKER_SURROUND        (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | \
+                                         SPEAKER_FRONT_CENTER | SPEAKER_BACK_CENTER)
+#ifndef KSAUDIO_SPEAKER_5POINT0
+#define KSAUDIO_SPEAKER_5POINT0         (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | \
+                                         SPEAKER_SIDE_LEFT  | SPEAKER_SIDE_RIGHT)
+#endif
+#define KSAUDIO_SPEAKER_5POINT1         (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | \
+                                         SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | \
+                                         SPEAKER_BACK_LEFT  | SPEAKER_BACK_RIGHT)
+#ifndef KSAUDIO_SPEAKER_7POINT0
+#define KSAUDIO_SPEAKER_7POINT0         (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | SPEAKER_FRONT_CENTER | \
+                                         SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT | \
+                                         SPEAKER_SIDE_LEFT | SPEAKER_SIDE_RIGHT)
+#endif
+#ifndef KSAUDIO_SPEAKER_7POINT1
+#define KSAUDIO_SPEAKER_7POINT1         (SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT | \
+                                         SPEAKER_FRONT_CENTER | SPEAKER_LOW_FREQUENCY | \
+                                         SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT | \
+                                         SPEAKER_FRONT_LEFT_OF_CENTER | SPEAKER_FRONT_RIGHT_OF_CENTER)
+#endif
+
 /* *INDENT-OFF* */
 using namespace ABI::Windows::ApplicationModel::Core;
 using namespace ABI::Windows::Foundation;