diff --git a/src/lib.rs b/src/lib.rs
index f11e122c..5a1c4e1b 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1298,7 +1298,8 @@ pub mod token_stream {
 
     impl Debug for IntoIter {
         fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-            Debug::fmt(&self.inner, f)
+            f.write_str("TokenStream ")?;
+            f.debug_list().entries(self.clone()).finish()
         }
     }
 
diff --git a/src/wrapper.rs b/src/wrapper.rs
index 750e156f..15d6dc4c 100644
--- a/src/wrapper.rs
+++ b/src/wrapper.rs
@@ -350,12 +350,6 @@ impl Iterator for TokenTreeIter {
     }
 }
 
-impl Debug for TokenTreeIter {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        f.debug_struct("TokenTreeIter").finish()
-    }
-}
-
 #[derive(Clone, PartialEq, Eq)]
 #[cfg(super_unstable)]
 pub(crate) enum SourceFile {