diff --git a/backend.native/tests/codegen/function/minus_eq-test.c b/backend.native/tests/codegen/function/minus_eq-test.c
index 877c4e4d3bb..0e779200f04 100644
--- a/backend.native/tests/codegen/function/minus_eq-test.c
+++ b/backend.native/tests/codegen/function/minus_eq-test.c
@@ -2,9 +2,9 @@ extern void *resolve_symbol(const char*);
 
 int
 run_test() {
-  int (*plus_eq)(int) = resolve_symbol("kfun:minus_eq(Int)");
+  int (*minus_eq)(int) = resolve_symbol("kfun:minus_eq(Int)");
 
-  if (plus_eq(23) != 12) return 1;
+  if (minus_eq(23) != -12) return 1;
 
   return 0;
 }