diff --git a/src/test/run-pass/issue-511.rs b/src/test/run-pass/issue-511.rs
new file mode 100644
index 000000000000..e895598c92b7
--- /dev/null
+++ b/src/test/run-pass/issue-511.rs
@@ -0,0 +1,10 @@
+use std;
+import std::option;
+
+fn f<@T>(&o: mutable option::t<T>) {
+    assert o == option::none;
+}
+
+fn main() {
+    f::<int>(option::none);
+}
\ No newline at end of file