diff --git a/c-check/test_rose.c b/c-check/test_rose.c
index cb91d270..1bf3fa7d 100644
--- a/c-check/test_rose.c
+++ b/c-check/test_rose.c
@@ -14,6 +14,16 @@ START_TEST(normalitem_whenSellInPositive_decreasesQualityByOne)
 }
 END_TEST
 
+START_TEST(normalitem_whenSellIsZero_decreasesQualityByOne)
+{
+  Item items[1];
+  init_item(items, NORMAL_ITEM, 0, 15);
+  update_quality(items, 1);
+
+  ck_assert_int_eq(70, items[0].quality);
+}
+END_TEST
+
 TCase *tcase_rose(void)
 {
   TCase *tc;