diff --git a/format.sh b/format.sh
index f57d308..90948a2 100644
--- a/format.sh
+++ b/format.sh
@@ -4,7 +4,7 @@ set -eo pipefail
 RUFF_VERSION=$(ruff --version | head -n 1 | awk '{print $2}')
 MYPY_VERSION=$(mypy --version | awk '{print $2}')
 
-echo "ruff ver $YAPF_VERSION"
+echo "ruff ver $RUFF_VERSION"
 echo "mypy ver $MYPY_VERSION"
 
 # Run mypy