diff --git a/crates/nu-parser/src/parse_shape_specs.rs b/crates/nu-parser/src/parse_shape_specs.rs
index 746bfd5232..4f3ab40c2e 100644
--- a/crates/nu-parser/src/parse_shape_specs.rs
+++ b/crates/nu-parser/src/parse_shape_specs.rs
@@ -64,12 +64,17 @@ pub fn parse_shape_name(
         b"number" => SyntaxShape::Number,
         b"path" => SyntaxShape::Filepath,
         b"range" => SyntaxShape::Range,
-        _ if bytes.starts_with(b"list")
+        _ if bytes.starts_with(b"oneof")
+            || bytes.starts_with(b"list")
             || bytes.starts_with(b"record")
             || bytes.starts_with(b"table") =>
         {
             let (type_name, type_params) = split_generic_params(working_set, bytes, span);
             match type_name {
+                b"oneof" => SyntaxShape::OneOf(match type_params {
+                    Some(params) => parse_type_params(working_set, params, use_loc),
+                    None => vec![],
+                }),
                 b"list" => SyntaxShape::List(Box::new(match type_params {
                     Some(params) => {
                         let mut parsed_params = parse_type_params(working_set, params, use_loc);
@@ -101,11 +106,6 @@ pub fn parse_shape_name(
             }
         }
         b"string" => SyntaxShape::String,
-        _ if bytes.starts_with(b"(") && bytes.ends_with(b")") => {
-            let source =
-                bytes[1..(bytes.len() - 1)].into_spanned(Span::new(span.start + 1, span.end - 1));
-            parse_one_of(working_set, source, use_loc)
-        }
         _ => {
             if bytes.contains(&b'@') {
                 let mut split = bytes.splitn(2, |b| b == &b'@');
@@ -312,44 +312,3 @@ fn parse_type_params(
 
     sig
 }
-
-fn parse_one_of(
-    working_set: &mut StateWorkingSet,
-    Spanned { item: source, span }: Spanned<&[u8]>,
-    use_loc: ShapeDescriptorUse,
-) -> SyntaxShape {
-    let (tokens, err) = lex_signature(source, span.start, &[b'\n', b'\r'], &[b':', b','], true);
-
-    if let Some(err) = err {
-        working_set.error(err);
-        return SyntaxShape::Any;
-    }
-
-    let mut sig = vec![];
-
-    let mut tokens = tokens.into_iter().peekable();
-    while let Some(token) = tokens.next() {
-        let TokenContents::Item = token.contents else {
-            working_set.error(ParseError::Expected("a type", token.span));
-            return SyntaxShape::Any;
-        };
-
-        let shape_bytes = working_set.get_span_contents(token.span).to_vec();
-        let shape = parse_shape_name(working_set, &shape_bytes, token.span, use_loc);
-        sig.push(shape);
-
-        let Some(token_pipe) = tokens.next() else {
-            break;
-        };
-
-        match token_pipe.contents {
-            TokenContents::Pipe => {}
-            _ => {
-                working_set.error(ParseError::Expected("pipe '|'", token_pipe.span));
-                return SyntaxShape::Any;
-            }
-        }
-    }
-
-    SyntaxShape::OneOf(sig)
-}
diff --git a/crates/nu-protocol/src/syntax_shape.rs b/crates/nu-protocol/src/syntax_shape.rs
index 87d491e40a..786a00982e 100644
--- a/crates/nu-protocol/src/syntax_shape.rs
+++ b/crates/nu-protocol/src/syntax_shape.rs
@@ -250,14 +250,14 @@ impl Display for SyntaxShape {
             SyntaxShape::Error => write!(f, "error"),
             SyntaxShape::CompleterWrapper(x, _) => write!(f, "completable<{x}>"),
             SyntaxShape::OneOf(list) => {
-                write!(f, "(")?;
+                write!(f, "oneof<")?;
                 if let Some((last, rest)) = list.split_last() {
                     for ty in rest {
-                        write!(f, "{ty} | ")?;
+                        write!(f, "{ty}, ")?;
                     }
                     write!(f, "{last}")?;
                 }
-                write!(f, ")")
+                write!(f, ">")
             }
             SyntaxShape::Nothing => write!(f, "nothing"),
         }
diff --git a/tests/repl/test_signatures.rs b/tests/repl/test_signatures.rs
index 0fee593546..cc8133afb5 100644
--- a/tests/repl/test_signatures.rs
+++ b/tests/repl/test_signatures.rs
@@ -340,32 +340,32 @@ fn table_annotations_with_extra_characters() -> TestResult {
 }
 
 #[rstest]
-fn one_of_annotations(
+fn oneof_annotations(
     #[values(
-        ("(cell-path | list<cell-path>)", "a.b.c", "cell-path"),
-        ("(cell-path | list<cell-path>)", "[a.b.c d.e.f]", "list<cell-path>"),
-        ("(closure | any)", "{}", "closure"),
-        ("(closure | any)", "{a: 1}", "record<a: int>"),
+        ("cell-path, list<cell-path>", "a.b.c", "cell-path"),
+        ("cell-path, list<cell-path>", "[a.b.c d.e.f]", "list<cell-path>"),
+        ("closure, any", "{}", "closure"),
+        ("closure, any", "{a: 1}", "record<a: int>"),
     )]
     annotation_data: (&str, &str, &str),
 ) -> TestResult {
-    let (one_of_type, argument, expected) = annotation_data;
+    let (types, argument, expected) = annotation_data;
 
-    let input = format!("def run [t: {one_of_type}] {{ $t }}; run {argument} | describe");
+    let input = format!("def run [t: oneof<{types}>] {{ $t }}; run {argument} | describe");
     run_test(&input, expected)
 }
 
 #[test]
-fn one_of_annotations_not_terminated() -> TestResult {
-    let input = "def run [t: (binary | string] { $t }";
-    let expected = "expected closing )";
+fn oneof_annotations_not_terminated() -> TestResult {
+    let input = "def run [t: oneof<binary, string] { $t }";
+    let expected = "expected closing >";
     fail_test(input, expected)
 }
 
 #[test]
-fn one_of_annotations_with_extra_characters() -> TestResult {
-    let input = "def run [t: (int | string)extra] {$t}";
-    let expected = "Unknown type.";
+fn oneof_annotations_with_extra_characters() -> TestResult {
+    let input = "def run [t: oneof<int, string>extra] {$t}";
+    let expected = "Extra characters in the parameter name";
     fail_test(input, expected)
 }