diff --git a/src/lookahead.rs b/src/lookahead.rs
index 2ca147147..75e3a658a 100644
--- a/src/lookahead.rs
+++ b/src/lookahead.rs
@@ -3,7 +3,7 @@ use crate::error::{self, Error};
 use crate::sealed::lookahead::Sealed;
 use crate::span::IntoSpans;
 use crate::token::Token;
-use proc_macro2::{Delimiter, Span};
+use proc_macro2::Span;
 use std::cell::RefCell;
 
 /// Support for checking the next token in a stream to decide how to parse.
@@ -162,8 +162,4 @@ impl<S> IntoSpans<S> for TokenMarker {
     }
 }
 
-pub(crate) fn is_delimiter(cursor: Cursor, delimiter: Delimiter) -> bool {
-    cursor.group(delimiter).is_some()
-}
-
 impl<F: Copy + FnOnce(TokenMarker) -> T, T: Token> Sealed for F {}
diff --git a/src/token.rs b/src/token.rs
index e04f10574..a39a1af67 100644
--- a/src/token.rs
+++ b/src/token.rs
@@ -100,8 +100,6 @@ use crate::lifetime::Lifetime;
 #[cfg(feature = "parsing")]
 use crate::lit::{Lit, LitBool, LitByte, LitByteStr, LitChar, LitFloat, LitInt, LitStr};
 #[cfg(feature = "parsing")]
-use crate::lookahead;
-#[cfg(feature = "parsing")]
 use crate::parse::{Parse, ParseStream};
 use crate::span::IntoSpans;
 use proc_macro2::extra::DelimSpan;
@@ -692,7 +690,7 @@ impl private::Sealed for Group {}
 #[cfg(feature = "parsing")]
 impl Token for Paren {
     fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::Parenthesis)
+        cursor.group(Delimiter::Parenthesis).is_some()
     }
 
     fn display() -> &'static str {
@@ -703,7 +701,7 @@ impl Token for Paren {
 #[cfg(feature = "parsing")]
 impl Token for Brace {
     fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::Brace)
+        cursor.group(Delimiter::Brace).is_some()
     }
 
     fn display() -> &'static str {
@@ -714,7 +712,7 @@ impl Token for Brace {
 #[cfg(feature = "parsing")]
 impl Token for Bracket {
     fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::Bracket)
+        cursor.group(Delimiter::Bracket).is_some()
     }
 
     fn display() -> &'static str {
@@ -725,7 +723,7 @@ impl Token for Bracket {
 #[cfg(feature = "parsing")]
 impl Token for Group {
     fn peek(cursor: Cursor) -> bool {
-        lookahead::is_delimiter(cursor, Delimiter::None)
+        cursor.group(Delimiter::None).is_some()
     }
 
     fn display() -> &'static str {