diff --git a/crates/nu-protocol/src/syntax_shape.rs b/crates/nu-protocol/src/syntax_shape.rs
index 85f308e105..87d491e40a 100644
--- a/crates/nu-protocol/src/syntax_shape.rs
+++ b/crates/nu-protocol/src/syntax_shape.rs
@@ -250,9 +250,14 @@ impl Display for SyntaxShape {
             SyntaxShape::Error => write!(f, "error"),
             SyntaxShape::CompleterWrapper(x, _) => write!(f, "completable<{x}>"),
             SyntaxShape::OneOf(list) => {
-                let arg_vec: Vec<_> = list.iter().map(|x| x.to_string()).collect();
-                let arg_string = arg_vec.join(", ");
-                write!(f, "one_of({arg_string})")
+                write!(f, "(")?;
+                if let Some((last, rest)) = list.split_last() {
+                    for ty in rest {
+                        write!(f, "{ty} | ")?;
+                    }
+                    write!(f, "{last}")?;
+                }
+                write!(f, ")")
             }
             SyntaxShape::Nothing => write!(f, "nothing"),
         }