diff --git a/dom/media/gtest/TestTrackEncoder.cpp b/dom/media/gtest/TestAudioTrackEncoder.cpp
similarity index 100%
rename from dom/media/gtest/TestTrackEncoder.cpp
rename to dom/media/gtest/TestAudioTrackEncoder.cpp
diff --git a/dom/media/gtest/moz.build b/dom/media/gtest/moz.build
index 595a530d12fc..d83c2a59f71b 100644
--- a/dom/media/gtest/moz.build
+++ b/dom/media/gtest/moz.build
@@ -11,6 +11,7 @@ UNIFIED_SOURCES += [
     'TestAudioMixer.cpp',
     'TestAudioPacketizer.cpp',
     'TestAudioSegment.cpp',
+    'TestAudioTrackEncoder.cpp',
     'TestBlankVideoDataCreator.cpp',
     'TestGMPCrossOrigin.cpp',
     'TestGMPRemoveAndDelete.cpp',
@@ -22,7 +23,6 @@ UNIFIED_SOURCES += [
     'TestMP3Demuxer.cpp',
     'TestMP4Demuxer.cpp',
     'TestRust.cpp',
-    'TestTrackEncoder.cpp',
     'TestVideoSegment.cpp',
     'TestVideoUtils.cpp',
     'TestVPXDecoding.cpp',