diff --git a/dom/media/platforms/ffmpeg/ffmpeg58/moz.build b/dom/media/platforms/ffmpeg/ffmpeg58/moz.build
--- a/dom/media/platforms/ffmpeg/ffmpeg58/moz.build
+++ b/dom/media/platforms/ffmpeg/ffmpeg58/moz.build
@@ -29,9 +29,6 @@
 if CONFIG['MOZ_WAYLAND']:
   CXXFLAGS += CONFIG['MOZ_GTK3_CFLAGS']
   DEFINES['MOZ_WAYLAND_USE_VAAPI'] = 1
-  UNIFIED_SOURCES += [
-    '../FFmpegVideoFramePool.cpp',
-  ]
   USE_LIBS += ['mozva']
 
 include("/ipc/chromium/chromium-config.mozbuild")
diff --git a/dom/media/platforms/ffmpeg/ffvpx/moz.build b/dom/media/platforms/ffmpeg/ffvpx/moz.build
--- a/dom/media/platforms/ffmpeg/ffvpx/moz.build
+++ b/dom/media/platforms/ffmpeg/ffvpx/moz.build
@@ -41,6 +41,9 @@
     CXXFLAGS += CONFIG["MOZ_GTK3_CFLAGS"]
     DEFINES["MOZ_WAYLAND_USE_VAAPI"] = 1
     USE_LIBS += ["mozva"]
+    UNIFIED_SOURCES += [
+        "../FFmpegVideoFramePool.cpp",
+    ]
 
 include("/ipc/chromium/chromium-config.mozbuild")