diff --git a/README.md b/README.md
index 265adeb..7adb850 100644
--- a/README.md
+++ b/README.md
@@ -32,15 +32,13 @@ can be included as a step in any other workflow file.
 The Ruff action can be customized via optional configuration parameters passed to Ruff (using `with:`):
 
 - version: Must be a Ruff release available on PyPI. By default, latest release of Ruff. You can pin a version, or use any valid version specifier.
-- mode: 'check' or 'format', default, 'check'
-- args: default, ''
+- args: default, `check`
 - src: default, '.'
 
 ```yaml
 - uses: chartboost/ruff-action@v1
   with:
     src: "./src"
-    mode: "check"
     version: 0.2.2
     args: --select B
 ```
diff --git a/action.yml b/action.yml
index 2d60add..4956cbc 100644
--- a/action.yml
+++ b/action.yml
@@ -2,17 +2,12 @@ name: "Ruff GH Action"
 description: "A GH Action of Ruff, the extremely fast Python linter."
 author: "The Ruff Community"
 inputs:
-  mode:
-    description:
-      "Specify ruff mode 'check' or 'format'"
-    required: false
-    default: "check"
   args:
     description:
       "Arguments passed to Ruff. Use `ruff --help` to see available options.
-      Default: ''"
+      Default: 'check'"
     required: false
-    default: ""
+    default: "check"
   src:
     description: "Source to run ruff. Default: '.'"
     required: false
@@ -35,7 +30,6 @@ runs:
         fi
       env:
         RUFF_OUTPUT_FORMAT: github
-        INPUT_MODE: ${{ inputs.mode }}
         INPUT_ARGS: ${{ inputs.args }}
         INPUT_SRC: ${{ inputs.src }}
         INPUT_VERSION: ${{ inputs.version }}
diff --git a/action/main.py b/action/main.py
index 1cba043..1e0e74f 100644
--- a/action/main.py
+++ b/action/main.py
@@ -9,7 +9,6 @@ from subprocess import run
 
 ACTION_PATH = Path(os.environ["GITHUB_ACTION_PATH"])
 ARGS = os.getenv("INPUT_ARGS", default="")
-MODE = os.getenv("INPUT_MODE", default="")
 SRC = os.getenv("INPUT_SRC", default="")
 VERSION = os.getenv("INPUT_VERSION", default="")
 
@@ -22,20 +21,6 @@ if VERSION != "":
 
 req = f"ruff{version_specifier}"
 
-command = (
-    ["pipx", "run", req, MODE, *shlex.split(ARGS), *shlex.split(SRC)]
-    if MODE == "check"
-    else [
-        "pipx",
-        "run",
-        req,
-        MODE,
-        "--check",
-        *shlex.split(ARGS),
-        *shlex.split(SRC),
-    ]
-)
-
-proc = run(command)
+proc = run(["pipx", "run", req, *shlex.split(ARGS), *shlex.split(SRC)])
 
 sys.exit(proc.returncode)