diff --git a/crates/oxc_linter/src/rules/unicorn/prefer_dom_node_dataset.rs b/crates/oxc_linter/src/rules/unicorn/prefer_dom_node_dataset.rs
index cd5275b72099b..533f0009e6132 100644
--- a/crates/oxc_linter/src/rules/unicorn/prefer_dom_node_dataset.rs
+++ b/crates/oxc_linter/src/rules/unicorn/prefer_dom_node_dataset.rs
@@ -95,16 +95,16 @@ impl Rule for PreferDomNodeDataset {
 
         match method_name {
             "setAttribute" => {
-                ctx.diagnostic(set(span, &dataset_property_name));
+                ctx.diagnostic(set(span, dataset_property_name));
             }
             "getAttribute" => {
-                ctx.diagnostic(get(span, &dataset_property_name));
+                ctx.diagnostic(get(span, dataset_property_name));
             }
 
-            "removeAttribute" => ctx.diagnostic(remove(string_lit.span, &dataset_property_name)),
+            "removeAttribute" => ctx.diagnostic(remove(string_lit.span, dataset_property_name)),
 
             "hasAttribute" => {
-                ctx.diagnostic(has(span, &dataset_property_name));
+                ctx.diagnostic(has(span, dataset_property_name));
             }
 
             _ => unreachable!(),
@@ -112,13 +112,8 @@ impl Rule for PreferDomNodeDataset {
     }
 }
 
-fn strip_data_prefix(s: &str) -> Option<String> {
-    let prefix = "data-";
-    if s.len() >= prefix.len() && s[..prefix.len()].eq_ignore_ascii_case(prefix) {
-        Some(s[prefix.len()..].to_string())
-    } else {
-        None
-    }
+fn strip_data_prefix(s: &str) -> Option<&str> {
+    s.strip_prefix("data-").or_else(|| s.strip_prefix("DATA-"))
 }
 
 #[test]
@@ -184,6 +179,7 @@ fn test() {
         r"element.getAttribute(0);",
         r#"element.getAttribute("foo-unicorn");"#,
         r#"element.getAttribute("data");"#,
+        r#"element.getAttribute("stylý");"#,
     ];
 
     let fail = vec![