diff --git a/media/libcubeb/src/moz.build b/media/libcubeb/src/moz.build
index b4515a3a9a..374a6df593 100644
--- a/media/libcubeb/src/moz.build
+++ b/media/libcubeb/src/moz.build
@@ -67,7 +67,7 @@ if CONFIG['OS_TARGET'] == 'WINNT':
         'cubeb_winmm.c',
     ]
     DEFINES['USE_WINMM'] = True
-    if CONFIG['MOZ_SAMPLE_TYPE_FLOAT32']:
+    if CONFIG['MOZ_SAMPLE_TYPE_FLOAT32'] and not CONFIG['GNU_CC']:
         DEFINES['USE_WASAPI'] = True
         SOURCES += [
             'cubeb_wasapi.cpp',