diff --git a/dom/media/gtest/moz.build b/dom/media/gtest/moz.build
index 8f75236b8f94..ee3e9ea70fcb 100644
--- a/dom/media/gtest/moz.build
+++ b/dom/media/gtest/moz.build
@@ -16,7 +16,6 @@ UNIFIED_SOURCES += [
     'MockMediaResource.cpp',
     'TestAudioBuffers.cpp',
     'TestAudioCompactor.cpp',
-    'TestAudioDeviceEnumerator.cpp',
     'TestAudioMixer.cpp',
     'TestAudioPacketizer.cpp',
     'TestAudioSegment.cpp',
@@ -47,6 +46,11 @@ if CONFIG['MOZ_WEBM_ENCODER']:
         'TestWebMWriter.cpp',
     ]
 
+if CONFIG['MOZ_WEBRTC']:
+    UNIFIED_SOURCES += [
+        'TestAudioDeviceEnumerator.cpp',
+    ]
+
 TEST_HARNESS_FILES.gtest += [
     '../test/gizmo-frag.mp4',
     '../test/gizmo.mp4',