diff --git a/tests/expected/function-contract/modifies/refcell_fixme.rs b/tests/expected/function-contract/modifies/refcell_fixme.rs
new file mode 100644
index 000000000000..8ae9cb390eb7
--- /dev/null
+++ b/tests/expected/function-contract/modifies/refcell_fixme.rs
@@ -0,0 +1,13 @@
+use std::cell::RefCell;
+use std::ops::Deref;
+
+#[kani::modifies(cell.borrow().deref())]
+fn modifies_ref_cell(cell: &RefCell<u32>) {
+    *cell.borrow_mut() = 100;
+}
+
+#[kani::proof_for_contract(modifies_ref_cell)]
+fn check_harness() {
+    let rc = RefCell::new(0);
+    modifies_ref_cell(&rc);
+}