diff --git a/tests/ui-fulldeps/rustc_public/check_transform.rs b/tests/ui-fulldeps/rustc_public/check_transform.rs
index 900bb4014d54..815dec57b8be 100644
--- a/tests/ui-fulldeps/rustc_public/check_transform.rs
+++ b/tests/ui-fulldeps/rustc_public/check_transform.rs
@@ -69,6 +69,7 @@ fn check_msg(body: &Body, expected: &str) {
                             })
                             .unwrap()
                     }
+                    Operand::RuntimeChecks(_) => panic!("unexpected runtime checks"),
                 };
                 let ConstantKind::Allocated(alloc) = msg_const.const_.kind() else {
                     unreachable!()