diff --git a/src/liballoc/tests/vec.rs b/src/liballoc/tests/vec.rs
index e329b45..509195c 100644
--- a/src/liballoc/tests/vec.rs
+++ b/src/liballoc/tests/vec.rs
@@ -80,6 +80,11 @@
 }
 
 #[test]
+fn test_zst_capacity() {
+    assert_eq!(Vec::<()>::new().capacity(), usize::max_value());
+}
+
+#[test]
 fn test_extend() {
     let mut v = Vec::new();
     let mut w = Vec::new();