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-rw-r--r--src/rail.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/src/rail.h b/src/rail.h
index 52139b69a..37944cb3d 100644
--- a/src/rail.h
+++ b/src/rail.h
@@ -290,8 +290,8 @@ static inline Track FindFirstTrack(TrackBits tracks)
*/
static inline Track TrackBitsToTrack(TrackBits tracks)
{
- assert(tracks == INVALID_TRACK_BIT || (tracks != TRACK_BIT_NONE && KILL_FIRST_BIT(tracks) == 0));
- return tracks != INVALID_TRACK_BIT ? (Track)FIND_FIRST_BIT(tracks) : INVALID_TRACK;
+ assert(tracks == INVALID_TRACK_BIT || (tracks != TRACK_BIT_NONE && KILL_FIRST_BIT(tracks & TRACK_BIT_MASK) == 0));
+ return tracks != INVALID_TRACK_BIT ? (Track)FIND_FIRST_BIT(tracks & TRACK_BIT_MASK) : INVALID_TRACK;
}
/**