diff --git a/crates/webidl-tests/global.js b/crates/webidl-tests/global.js
index 305de81b3..b703d16ca 100644
--- a/crates/webidl-tests/global.js
+++ b/crates/webidl-tests/global.js
@@ -1,4 +1,8 @@
-global.global_no_args = () => 3;
-global.global_with_args = (a, b) => a + b;
-global.global_attribute = 'x';
+const map = {
+  global_no_args: () => 3,
+  global_with_args: (a, b) => a + b,
+  global_attribute: 'x',
+};
+
+global.get_global = () => map;
 
diff --git a/crates/webidl-tests/global.rs b/crates/webidl-tests/global.rs
index d52305fc1..2a9846909 100644
--- a/crates/webidl-tests/global.rs
+++ b/crates/webidl-tests/global.rs
@@ -1,13 +1,20 @@
 use js_sys::Object;
+use wasm_bindgen::prelude::*;
 use wasm_bindgen_test::*;
 
 include!(concat!(env!("OUT_DIR"), "/global.rs"));
 
+#[wasm_bindgen]
+extern {
+    fn get_global() -> Global;
+}
+
 #[wasm_bindgen_test]
 fn works() {
-    assert_eq!(Global::global_no_args(), 3);
-    assert_eq!(Global::global_with_args("a", "b"), "ab");
-    assert_eq!(Global::global_attribute(), "x");
-    Global::set_global_attribute("y");
-    assert_eq!(Global::global_attribute(), "y");
+    let x = get_global();
+    assert_eq!(x.global_no_args(), 3);
+    assert_eq!(x.global_with_args("a", "b"), "ab");
+    assert_eq!(x.global_attribute(), "x");
+    x.set_global_attribute("y");
+    assert_eq!(x.global_attribute(), "y");
 }
diff --git a/crates/webidl-tests/simple.js b/crates/webidl-tests/simple.js
index eaeb2bbd5..8498b547d 100644
--- a/crates/webidl-tests/simple.js
+++ b/crates/webidl-tests/simple.js
@@ -87,7 +87,11 @@ global.Unforgeable = class Unforgeable {
   }
 };
 
-global.m = () => 123;
+global.GlobalMethod = class {
+  m() { return 123; }
+};
+
+global.get_global_method = () => new GlobalMethod();
 
 global.Indexing = function () {
   return new Proxy({}, {
diff --git a/crates/webidl-tests/simple.rs b/crates/webidl-tests/simple.rs
index 7c1923f8b..21a710e41 100644
--- a/crates/webidl-tests/simple.rs
+++ b/crates/webidl-tests/simple.rs
@@ -72,9 +72,16 @@ fn nullable_method() {
     assert!(f.opt(None) == None);
 }
 
+#[wasm_bindgen]
+extern {
+    fn get_global_method() -> GlobalMethod;
+}
+
+
 #[wasm_bindgen_test]
 fn global_method() {
-    assert_eq!(GlobalMethod::m(), 123);
+    let x = get_global_method();
+    assert_eq!(x.m(), 123);
 }
 
 #[wasm_bindgen_test]