diff --git a/crates/ty_python_semantic/src/types/diagnostic.rs b/crates/ty_python_semantic/src/types/diagnostic.rs
index 5e0ba48b79..efaa226a54 100644
--- a/crates/ty_python_semantic/src/types/diagnostic.rs
+++ b/crates/ty_python_semantic/src/types/diagnostic.rs
@@ -307,7 +307,7 @@ declare_lint! {
     ///     d: bytes
     /// ```
     pub(crate) static DUPLICATE_KW_ONLY = {
-        summary: "detects dataclass definitions with more than once usages of `KW_ONLY`",
+        summary: "detects dataclass definitions with more than one usage of `KW_ONLY`",
         status: LintStatus::preview("1.0.0"),
         default_level: Level::Error,
     }
diff --git a/ty.schema.json b/ty.schema.json
index 3c896cb48d..b965b73434 100644
--- a/ty.schema.json
+++ b/ty.schema.json
@@ -352,7 +352,7 @@
           ]
         },
         "duplicate-kw-only": {
-          "title": "detects dataclass definitions with more than once usages of `KW_ONLY`",
+          "title": "detects dataclass definitions with more than one usage of `KW_ONLY`",
           "description": "## What it does\nChecks for dataclass definitions with more than one field\nannotated with `KW_ONLY`.\n\n## Why is this bad?\n`dataclasses.KW_ONLY` is a special marker used to\nemulate the `*` syntax in normal signatures.\nIt can only be used once per dataclass.\n\nAttempting to annotate two different fields with\nit will lead to a runtime error.\n\n## Examples\n```python\nfrom dataclasses import dataclass, KW_ONLY\n\n@dataclass\nclass A:  # Crash at runtime\n    b: int\n    _1: KW_ONLY\n    c: str\n    _2: KW_ONLY\n    d: bytes\n```",
           "default": "error",
           "oneOf": [