diff --git a/macros/src/types/unit.rs b/macros/src/types/unit.rs
index 4b4f88de..00268844 100644
--- a/macros/src/types/unit.rs
+++ b/macros/src/types/unit.rs
@@ -12,7 +12,7 @@ pub(crate) fn empty_object(attr: &StructAttr, ts_name: Expr) -> DerivedTS {
 
     DerivedTS {
         crate_rename: crate_rename.clone(),
-        inline: quote!("Record<string, never>".to_owned()),
+        inline: quote!("Record<symbol, never>".to_owned()),
         inline_flattened: None,
         docs: attr.docs.clone(),
         dependencies: Dependencies::new(crate_rename),
diff --git a/ts-rs/tests/integration/docs.rs b/ts-rs/tests/integration/docs.rs
index f4627e4c..32afc819 100644
--- a/ts-rs/tests/integration/docs.rs
+++ b/ts-rs/tests/integration/docs.rs
@@ -212,15 +212,15 @@ fn export_c() {
     C::export().unwrap();
 
     let expected_content = concat!(
-            "// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.\n\n",
-            "/**\n",
-            " * Doc comment.\n",
-            " * Supports new lines.\n",
-            " *\n",
-            " * Testing\n",
-            " */\n",
-            "export type C = Record<string, never>;\n",
-        );
+        "// This file was generated by [ts-rs](https://github.com/Aleph-Alpha/ts-rs). Do not edit this file manually.\n\n",
+        "/**\n",
+        " * Doc comment.\n",
+        " * Supports new lines.\n",
+        " *\n",
+        " * Testing\n",
+        " */\n",
+        "export type C = Record<symbol, never>;\n",
+    );
 
     let actual_content = fs::read_to_string(C::default_output_path().unwrap()).unwrap();
 
diff --git a/ts-rs/tests/integration/unit.rs b/ts-rs/tests/integration/unit.rs
index 999d4c3c..55f3707f 100644
--- a/ts-rs/tests/integration/unit.rs
+++ b/ts-rs/tests/integration/unit.rs
@@ -6,7 +6,7 @@ use ts_rs::TS;
 struct Unit;
 
 // serde_json serializes this to `{}`.
-// The TS type best describing an empty object is `Record<string, never>`.
+// The TS type best describing an empty object is `Record<symbol, never>`.
 #[derive(TS)]
 #[ts(export, export_to = "unit/")]
 struct Unit2 {}
@@ -25,7 +25,7 @@ struct Unit4(());
 #[test]
 fn test() {
     assert_eq!("type Unit = null;", Unit::decl());
-    assert_eq!("type Unit2 = Record<string, never>;", Unit2::decl());
+    assert_eq!("type Unit2 = Record<symbol, never>;", Unit2::decl());
     assert_eq!("type Unit3 = never[];", Unit3::decl());
     assert_eq!("type Unit4 = null;", Unit4::decl());
 }