diff --git a/services/oboeservice/FakeAudioHal.h b/services/oboeservice/FakeAudioHal.h
index f47ccd9..d3aa4e8 100644
--- a/services/oboeservice/FakeAudioHal.h
+++ b/services/oboeservice/FakeAudioHal.h
@@ -39,7 +39,9 @@
 //extern "C"
 //{
 
-int fake_hal_open(int card_id, int device_id, fake_hal_stream_ptr *stream_pp);
+int fake_hal_open(int card_id, int device_id,
+                  int frameCapacity,
+                  fake_hal_stream_ptr *stream_pp);
 
 int fake_hal_get_mmap_info(fake_hal_stream_ptr stream, mmap_buffer_info *info);