diff --git a/src/m4a.c b/src/m4a.c
index b8f9e21c11..2280fc74c8 100644
--- a/src/m4a.c
+++ b/src/m4a.c
@@ -643,28 +643,17 @@ void FadeOutBody(struct MusicPlayerInfo *mplayInfo)
     s32 i;
     struct MusicPlayerTrack *track;
     u16 fadeOV;
-#ifdef NONMATCHING
-    u16 mask;
-#else
-    register u16 mask asm("r2");
-#endif // NONMATCHING
 
     if (mplayInfo->fadeOI == 0)
         return;
-
-    mplayInfo->fadeOC--;
-    mask = 0xFFFF;
-
-    if (mplayInfo->fadeOC != 0)
+    if (--mplayInfo->fadeOC != 0)
         return;
 
     mplayInfo->fadeOC = mplayInfo->fadeOI;
 
     if (mplayInfo->fadeOV & FADE_IN)
     {
-        mplayInfo->fadeOV += (4 << FADE_VOL_SHIFT);
-
-        if ((u16)(mplayInfo->fadeOV & mask) >= (64 << FADE_VOL_SHIFT))
+        if ((u16)(mplayInfo->fadeOV += (4 << FADE_VOL_SHIFT)) >= (64 << FADE_VOL_SHIFT))
         {
             mplayInfo->fadeOV = (64 << FADE_VOL_SHIFT);
             mplayInfo->fadeOI = 0;
@@ -672,11 +661,8 @@ void FadeOutBody(struct MusicPlayerInfo *mplayInfo)
     }
     else
     {
-        mplayInfo->fadeOV -= (4 << FADE_VOL_SHIFT);
-
-        if ((s16)(mplayInfo->fadeOV & mask) <= 0)
+        if ((s16)(mplayInfo->fadeOV -= (4 << FADE_VOL_SHIFT)) <= 0)
         {
-
             for (i = mplayInfo->trackCount, track = mplayInfo->tracks; i > 0; i--, track++)
             {
                 u32 val;