diff --git a/spcd/cmd.py b/spcd/cmd.py
index 188d191..12f4dc2 100644
--- a/spcd/cmd.py
+++ b/spcd/cmd.py
@@ -27,6 +27,7 @@ def spcd_build_project() -> None:
 def spcd_check_project() -> None:
     """Check the project for anything wrong."""
     ps.run("ruff", "check")
+    ps.run("ruff", "format", "--diff")
 
 
 def spcd_synchronize(