1 files changed, 1 insertions, 1 deletions

diff --git a/README.md b/README.md
index 1278b31..25ba2d4 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ example, on a Linux system with GCC installed:
 
 ```
 cd path/to/nissy
-gcc -O3 -std=c99 -o nissy ./src/*.c
+gcc -O2 -std=c99 -o nissy ./src/*.c
 ./nissy
 ```