diff --git a/update_layout.py b/update_layout.py
index d3a08d1..1362ccd 100644
--- a/update_layout.py
+++ b/update_layout.py
@@ -7,23 +7,6 @@
 app = typer.Typer(no_args_is_help=True)
 
 
-def fix_file(target_file: pathlib.Path):
-    fm_file = frontmatter.loads(target_file.read_text())
-
-    if "layout" not in fm_file.metadata:
-        fm_file["layout"] = "post"
-        target_file.write_text(frontmatter.dumps(fm_file))
-
-
-@app.command(name="fix")
-def fix_files(
-    target_files: typing.List[pathlib.Path],
-) -> None:
-    """Adds the default layout if the post is missing."""
-    for target_file in target_files:
-        fix_file(target_file)
-
-
 @app.command(name="check")
 def check_file(
     target_files: typing.List[pathlib.Path],
@@ -36,7 +19,8 @@ def check_file(
 
         if "layout" not in fm_file.metadata:
             print("%s is missing the `layout` value. Applying layout: post.")
-            fix_file(target_file)
+            fm_file["layout"] = "post"
+            target_file.write_text(frontmatter.dumps(fm_file))
             ret_code = 1
 
     typer.Exit(code=ret_code)