diff --git a/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c b/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c
index 3fd15a0..232ac14 100644
--- a/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c
+++ b/subprojects/gst-plugins-bad/sys/wasapi/gstwasapiutil.c
@@ -39,6 +39,7 @@ GST_DEBUG_CATEGORY_EXTERN (gst_wasapi_debug);
 /* __uuidof is only available in C++, so we hard-code the GUID values for all
  * these. This is ok because these are ABI. MSYS2 provides these in C. */
 #ifndef HAVE_AUDCLNT_GUIDS
+static
 const CLSID CLSID_MMDeviceEnumerator = { 0xbcde0395, 0xe52f, 0x467c,
   {0x8e, 0x3d, 0xc4, 0x57, 0x92, 0x91, 0x69, 0x2e}
 };