diff --git a/tests/rustdoc-ui/deref/negative-deref-ice-128801.rs b/tests/rustdoc-ui/deref/negative-deref-ice-128801.rs
new file mode 100644
index 000000000000..439727f3d3d3
--- /dev/null
+++ b/tests/rustdoc-ui/deref/negative-deref-ice-128801.rs
@@ -0,0 +1,11 @@
+//@ check-pass
+
+// Regression test for https://github.com/rust-lang/rust/issues/128801
+// Negative `Deref`/`DerefMut` impls should not cause an ICE.
+
+#![feature(negative_impls)]
+
+pub struct Source;
+
+impl !std::ops::Deref for Source {}
+impl !std::ops::DerefMut for Source {}