diff --git a/test_suite/tests/test_enum_internally_tagged.rs b/test_suite/tests/test_enum_internally_tagged.rs
index 0e4cb52ab..0630da8ed 100644
--- a/test_suite/tests/test_enum_internally_tagged.rs
+++ b/test_suite/tests/test_enum_internally_tagged.rs
@@ -69,6 +69,25 @@ fn unit() {
         ],
     );
 
+    assert_de_tokens(
+        &InternallyTagged::Unit,
+        &[
+            Token::Map { len: Some(1) },
+            Token::Str("tag"),
+            Token::Str("Unit"),
+            Token::MapEnd,
+        ],
+    );
+    assert_de_tokens(
+        &InternallyTagged::Unit,
+        &[
+            Token::Map { len: Some(1) },
+            Token::BorrowedStr("tag"),
+            Token::BorrowedStr("Unit"),
+            Token::MapEnd,
+        ],
+    );
+
     assert_de_tokens(
         &InternallyTagged::Unit,
         &[
@@ -109,6 +128,31 @@ fn newtype_unit() {
             Token::MapEnd,
         ],
     );
+
+    assert_de_tokens(
+        &value,
+        &[
+            Token::Struct {
+                name: "InternallyTagged",
+                len: 1,
+            },
+            Token::Str("tag"),
+            Token::Str("NewtypeUnit"),
+            Token::StructEnd,
+        ],
+    );
+    assert_de_tokens(
+        &value,
+        &[
+            Token::Struct {
+                name: "InternallyTagged",
+                len: 1,
+            },
+            Token::BorrowedStr("tag"),
+            Token::BorrowedStr("NewtypeUnit"),
+            Token::StructEnd,
+        ],
+    );
 }
 
 #[test]