diff --git a/services/audioflinger/MmapTracks.h b/services/audioflinger/MmapTracks.h
index 081af74..0cee3f8 100644
--- a/services/audioflinger/MmapTracks.h
+++ b/services/audioflinger/MmapTracks.h
@@ -22,7 +22,7 @@
 // playback track
 class MmapTrack : public TrackBase, public IAfMmapTrack {
 public:
-                MmapTrack(AudioFlinger::ThreadBase* thread,
+    MmapTrack(IAfThreadBase* thread,
                             const audio_attributes_t& attr,
                             uint32_t sampleRate,
                             audio_format_t format,