diff --git a/.build.yml b/.build.yml
index a9be8c8..b542f83 100644
--- a/.build.yml
+++ b/.build.yml
@@ -9,7 +9,7 @@ sources:
 tasks:
   - lint: |
       cd crystal-cbor
-      crystal tool format --chec
+      crystal tool format --check
   - test: |
       cd crystal-cbor
       crystal spec