diff --git a/test/test-api.c b/test/test-api.c
index 166cfca6..e5827a93 100644
--- a/test/test-api.c
+++ b/test/test-api.c
@@ -152,6 +152,9 @@ int main() {
     }
     result = ok;
   });
+  CHECK_BODY("malloc-aligned5", {
+    void* p = mi_malloc_aligned(4097,4096); size_t usable = mi_usable_size(p); result = usable >= 4097 && usable < 10000; mi_free(p);
+  });
   CHECK_BODY("malloc-aligned-at1", {
     void* p = mi_malloc_aligned_at(48,32,0); result = (p != NULL && ((uintptr_t)(p) + 0) % 32 == 0); mi_free(p);
   });