diff --git a/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c b/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c
index c0fce05833..8f935837ee 100644
--- a/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c
+++ b/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c
@@ -37,7 +37,8 @@ GST_DEBUG_CATEGORY_EXTERN (gst_wasapi_debug);
 #include <functiondiscoverykeys_devpkey.h>
 
 /* __uuidof is only available in C++, so we hard-code the GUID values for all
- * these. This is ok because these are ABI. */
+ * these. This is ok because these are ABI. MSYS2 provides these in C. */
+#ifndef HAVE_AUDCLNT_GUIDS
 const CLSID CLSID_MMDeviceEnumerator = { 0xbcde0395, 0xe52f, 0x467c,
   {0x8e, 0x3d, 0xc4, 0x57, 0x92, 0x91, 0x69, 0x2e}
 };
@@ -54,10 +55,6 @@ const IID IID_IAudioClient = { 0x1cb9ad4c, 0xdbfa, 0x4c32,
   {0xb1, 0x78, 0xc2, 0xf5, 0x68, 0xa7, 0x03, 0xb2}
 };
 
-const IID IID_IAudioClient3 = { 0x7ed4ee07, 0x8e67, 0x4cd4,
-  {0x8c, 0x1a, 0x2b, 0x7a, 0x59, 0x87, 0xad, 0x42}
-};
-
 const IID IID_IAudioClock = { 0xcd63314f, 0x3fba, 0x4a1b,
   {0x81, 0x2c, 0xef, 0x96, 0x35, 0x87, 0x28, 0xe7}
 };
@@ -69,6 +66,13 @@ const IID IID_IAudioCaptureClient = { 0xc8adbd64, 0xe71e, 0x48a0,
 const IID IID_IAudioRenderClient = { 0xf294acfc, 0x3146, 0x4483,
   {0xa7, 0xbf, 0xad, 0xdc, 0xa7, 0xc2, 0x60, 0xe2}
 };
+#endif
+
+#ifndef HAVE_AUDCLNT3_GUID
+const IID IID_IAudioClient3 = { 0x7ed4ee07, 0x8e67, 0x4cd4,
+  {0x8c, 0x1a, 0x2b, 0x7a, 0x59, 0x87, 0xad, 0x42}
+};
+#endif
 
 /* Desktop only defines */
 #ifndef KSAUDIO_SPEAKER_MONO
diff --git a/subprojects/gst-plugins-bad/sys/wasapi/meson.build b/subprojects/gst-plugins-bad/sys/wasapi/meson.build
index 9e3f1b2ce0..aba3ec56ce 100644
--- a/subprojects/gst-plugins-bad/sys/wasapi/meson.build
+++ b/subprojects/gst-plugins-bad/sys/wasapi/meson.build
@@ -28,6 +28,18 @@ if ole32_dep.found() and ksuser_dep.found() and have_audioclient_h
     wasapi_args += ['-DHAVE_AUDCLNT_STREAMOPTIONS']
   endif
 
+  # MinGW defines some of these GUIDs in headers, whereas with MSVC we're
+  # expected to define them in the code. Check which ones we need to provide.
+  if cc.get_id() != 'msvc'
+    if cc.has_header_symbol('audioclient.h', 'IID_IAudioClient')
+      wasapi_args += ['-DHAVE_AUDCLNT_GUIDS']
+    endif
+
+    if cc.has_header_symbol('audioclient.h', 'IID_IAudioClient3')
+      wasapi_args += ['-DHAVE_AUDCLNT3_GUID']
+    endif
+  endif
+
   gstwasapi = library('gstwasapi',
     wasapi_sources,
     c_args : gst_plugins_bad_args + wasapi_args,