--- a/image/moz.build
+++ b/image/moz.build
@@ -67,31 +67,31 @@ UNIFIED_SOURCES += [
     'ImageWrapper.cpp',
     'imgFrame.cpp',
     'imgLoader.cpp',
     'imgRequest.cpp',
     'imgRequestProxy.cpp',
     'imgTools.cpp',
     'MultipartImage.cpp',
     'OrientedImage.cpp',
+    'ProgressTracker.cpp',
     'ScriptedNotificationObserver.cpp',
     'ShutdownTracker.cpp',
     'SourceBuffer.cpp',
     'SurfaceCache.cpp',
     'SurfaceCacheUtils.cpp',
     'SurfacePipe.cpp',
     'SVGDocumentWrapper.cpp',
     'VectorImage.cpp',
 ]
 if CONFIG['MOZ_ENABLE_SKIA']:
     UNIFIED_SOURCES += [ 'Downscaler.cpp']
 
 # These files can't be unified because of ImageLogging.h #include order issues.
 SOURCES += [
-    'ProgressTracker.cpp',
     'RasterImage.cpp',
 ]
 
 include('/ipc/chromium/chromium-config.mozbuild')
 
 FINAL_LIBRARY = 'xul'
 
 LOCAL_INCLUDES += [