diff --git a/backend.native/tests/interop/basics/unable_to_import.def b/backend.native/tests/interop/basics/unable_to_import.def
index 4a387880d07..a877fb6c03c 100644
--- a/backend.native/tests/interop/basics/unable_to_import.def
+++ b/backend.native/tests/interop/basics/unable_to_import.def
@@ -4,3 +4,7 @@ int global;
 
 void foo(void);
 #define foo <
+
+// Setter for x should not be generated.
+typedef const int cint;
+cint x;