diff --git a/cmd/avif/main.go b/cmd/avif/main.go
index 842afb7..e69d6d0 100644
--- a/cmd/avif/main.go
+++ b/cmd/avif/main.go
@@ -25,7 +25,7 @@ Options:
   -o <dst>, --output=<dst>  Destination filename
   -q <qp>, --quality=<qp>   Compression level (0..63), [default: 25]
   -s <spd>, --speed=<spd>   Compression speed (0..8), [default: 4]
-  -t <td>, --threads=<td>   Number of threads (1..64, 0 for all available cores), [default: 0]
+  -t <td>, --threads=<td>   Number of threads (0..64, 0 for all available cores), [default: 0]
   --lossless                Lossless compression (alias for -q 0)
   --best                    Slowest compression method (alias for -s 0)
   --fast                    Fastest compression method (alias for -s 8)