1 files changed, 3 insertions, 1 deletions

diff --git a/README.md b/README.md
index a9ba8f2..a26236a 100644
--- a/README.md
+++ b/README.md
@@ -6,9 +6,11 @@ Tower of hanoi puzzle with ncurses.
 
 ```
 make
-./hanoi [number of disks]
+./hanoi [number of disks] [-s]
 ```
 
+Use `-s` to solve the puzzle.
+
 ### Controls
 
 Cycle through the 3 pegs with `j`/`k` or left/right arrow.