diff --git a/src/Sound.cpp b/src/Sound.cpp
index 556dfc87..a8c5ee0c 100644
--- a/src/Sound.cpp
+++ b/src/Sound.cpp
@@ -267,6 +267,7 @@ void ChangeSoundPan(int no, long pan)	// 512がMAXで256がﾉｰﾏﾙ (512 is
 	lpSECONDARYBUFFER[no]->SetPan((pan - 256) * 10);
 }
 
+// TODO - The stack frame for this function is inaccurate
 int MakePixToneObject(const PIXTONEPARAMETER *ptp, int ptp_num, int no)
 {
 	typedef struct WavHeader