--- a/python/mozbuild/mozbuild/frontend/emitter.py
+++ b/python/mozbuild/mozbuild/frontend/emitter.py
@@ -149,16 +149,17 @@ ALLOWED_XPCOM_GLUE = {
     ('test_IHistory', 'toolkit/components/places/tests/cpp'),
     ('testcrasher', 'toolkit/crashreporter/test'),
     ('TestStartupCache', 'startupcache/test'),
     ('jsep_session_unittest', 'media/webrtc/signaling/test'),
     ('jsep_track_unittest', 'media/webrtc/signaling/test'),
     ('mediaconduit_unittests', 'media/webrtc/signaling/test'),
     ('mediapipeline_unittest', 'media/webrtc/signaling/test'),
     ('sdp_file_parser', 'media/webrtc/signaling/fuzztest'),
+    ('sdp_unittests', 'media/webrtc/signaling/test'),
     ('signaling_unittests', 'media/webrtc/signaling/test'),
     ('TestMailCookie', 'mailnews/base/test'),
 }
 
 
 class TreeMetadataEmitter(LoggingMixin):
     """Converts the executed mozbuild files into data structures.