diff --git a/test_suite/tests/test_de.rs b/test_suite/tests/test_de.rs
index d9a0c8a4..025d87b0 100644
--- a/test_suite/tests/test_de.rs
+++ b/test_suite/tests/test_de.rs
@@ -137,12 +137,6 @@ enum EnumOther {
     Other,
 }
 
-#[derive(PartialEq, Debug, Deserialize)]
-#[serde(untagged)]
-enum EnumUntaggedUnit {
-    Unit,
-}
-
 #[derive(PartialEq, Debug)]
 struct IgnoredAny;
 
@@ -794,9 +788,6 @@ declare_tests! {
             Token::Unit,
         ],
     }
-    test_enum_untagged_unit_from_none {
-        EnumUntaggedUnit::Unit => &[Token::None],
-    }
     test_box {
         Box::new(0i32) => &[Token::I32(0)],
     }
diff --git a/test_suite/tests/test_macros.rs b/test_suite/tests/test_macros.rs
index c4eb06f3..d18b210e 100644
--- a/test_suite/tests/test_macros.rs
+++ b/test_suite/tests/test_macros.rs
@@ -638,6 +638,7 @@ fn test_untagged_enum() {
     );
 
     assert_tokens(&Untagged::C, &[Token::Unit]);
+    assert_tokens(&Untagged::C, &[Token::None]);
 
     assert_tokens(&Untagged::D(4), &[Token::U8(4)]);
     assert_tokens(&Untagged::E("e".to_owned()), &[Token::Str("e")]);
@@ -652,11 +653,6 @@ fn test_untagged_enum() {
         ],
     );
 
-    assert_de_tokens_error::<Untagged>(
-        &[Token::None],
-        "data did not match any variant of untagged enum Untagged",
-    );
-
     assert_de_tokens_error::<Untagged>(
         &[Token::Tuple { len: 1 }, Token::U8(1), Token::TupleEnd],
         "data did not match any variant of untagged enum Untagged",