diff --git a/tests/main/unt/bidimap.c b/tests/main/unt/bidimap.c
index 7b4f22f..8b5cee7 100644
--- a/tests/main/unt/bidimap.c
+++ b/tests/main/unt/bidimap.c
@@ -597,5 +597,11 @@ CMC_CREATE_UNIT(bidimap_test, true, {
         cmc_assert_equals(ptr, NULL, map->callbacks);
 
         bm_free(map);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/deque.c b/tests/main/unt/deque.c
index 8c06ae0..34d7381 100644
--- a/tests/main/unt/deque.c
+++ b/tests/main/unt/deque.c
@@ -811,5 +811,11 @@ CMC_CREATE_UNIT(deque_test, true, {
         cmc_assert_equals(ptr, NULL, d->callbacks);
 
         d_free(d);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/hashmap.c b/tests/main/unt/hashmap.c
index 5afbb47..3dc4aa1 100644
--- a/tests/main/unt/hashmap.c
+++ b/tests/main/unt/hashmap.c
@@ -607,11 +607,7 @@ CMC_CREATE_UNIT(hashmap_test, true, {
         struct hashmap *map =
             hm_new_custom(100, 0.6, hm_ftab_key, hm_ftab_val, NULL, callbacks);
 
-        total_create = 0;
-        total_read = 0;
-        total_update = 0;
-        total_delete = 0;
-        total_resize = 0;
+        cmc_assert_not_equals(ptr, NULL, map);
 
         cmc_assert(hm_insert(map, 1, 2));
         cmc_assert_equals(int32_t, 1, total_create);
@@ -678,5 +674,11 @@ CMC_CREATE_UNIT(hashmap_test, true, {
         cmc_assert_equals(ptr, NULL, map->callbacks);
 
         hm_free(map);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/hashset.c b/tests/main/unt/hashset.c
index 7f5d3b0..2ec072b 100644
--- a/tests/main/unt/hashset.c
+++ b/tests/main/unt/hashset.c
@@ -486,6 +486,8 @@ CMC_CREATE_UNIT(hashset_test, true, {
         struct hashset *set =
             hs_new_custom(100, 0.6, hs_ftab_val, NULL, callbacks);
 
+        cmc_assert_not_equals(ptr, NULL, set);
+
         total_create = 0;
         total_read = 0;
         total_update = 0;
@@ -545,5 +547,11 @@ CMC_CREATE_UNIT(hashset_test, true, {
         cmc_assert_equals(ptr, NULL, set->callbacks);
 
         hs_free(set);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/heap.c b/tests/main/unt/heap.c
index c9a24a9..f07d4fe 100644
--- a/tests/main/unt/heap.c
+++ b/tests/main/unt/heap.c
@@ -228,6 +228,8 @@ CMC_CREATE_UNIT(heap_test, true, {
         struct heap *h =
             h_new_custom(100, cmc_max_heap, h_ftab_val, NULL, callbacks);
 
+        cmc_assert_not_equals(ptr, NULL, h);
+
         total_create = 0;
         total_read = 0;
         total_update = 0;
@@ -283,5 +285,11 @@ CMC_CREATE_UNIT(heap_test, true, {
         cmc_assert_equals(ptr, NULL, h->callbacks);
 
         h_free(h);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/intervalheap.c b/tests/main/unt/intervalheap.c
index 8cb262f..586a5a3 100644
--- a/tests/main/unt/intervalheap.c
+++ b/tests/main/unt/intervalheap.c
@@ -265,6 +265,8 @@ CMC_CREATE_UNIT(intervalheap_test, true, {
         struct intervalheap *ih =
             ih_new_custom(100, ih_ftab_val, NULL, callbacks);
 
+        cmc_assert_not_equals(ptr, NULL, ih);
+
         total_create = 0;
         total_read = 0;
         total_update = 0;
@@ -342,5 +344,11 @@ CMC_CREATE_UNIT(intervalheap_test, true, {
         cmc_assert_equals(ptr, NULL, ih->callbacks);
 
         ih_free(ih);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/linkedlist.c b/tests/main/unt/linkedlist.c
index cd04e84..a0131b6 100644
--- a/tests/main/unt/linkedlist.c
+++ b/tests/main/unt/linkedlist.c
@@ -260,6 +260,8 @@ CMC_CREATE_UNIT(linkedlist_test, true, {
     CMC_CREATE_TEST(callbacks, {
         struct linkedlist *ll = ll_new_custom(ll_ftab_val, NULL, callbacks);
 
+        cmc_assert_not_equals(ptr, NULL, ll);
+
         total_create = 0;
         total_read = 0;
         total_update = 0;
@@ -335,5 +337,11 @@ CMC_CREATE_UNIT(linkedlist_test, true, {
         cmc_assert_equals(ptr, NULL, ll->callbacks);
 
         ll_free(ll);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/list.c b/tests/main/unt/list.c
index c8906f9..e4a6e46 100644
--- a/tests/main/unt/list.c
+++ b/tests/main/unt/list.c
@@ -500,6 +500,8 @@ CMC_CREATE_UNIT(list_test, true, {
     CMC_CREATE_TEST(callbacks, {
         struct list *l = l_new_custom(100, l_ftab_val, NULL, callbacks);
 
+        cmc_assert_not_equals(ptr, NULL, l);
+
         total_create = 0;
         total_read = 0;
         total_update = 0;
@@ -605,5 +607,11 @@ CMC_CREATE_UNIT(list_test, true, {
         l_free(l);
         l_free(l2);
         l_free(l3);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 })
diff --git a/tests/main/unt/multimap.c b/tests/main/unt/multimap.c
index 79c2d63..655ae6c 100644
--- a/tests/main/unt/multimap.c
+++ b/tests/main/unt/multimap.c
@@ -277,6 +277,8 @@ CMC_CREATE_UNIT(multimap_test, true, {
         struct multimap *map =
             mm_new_custom(100, 0.8, mm_ftab_key, mm_ftab_val, NULL, callbacks);
 
+        cmc_assert_not_equals(ptr, NULL, map);
+
         total_create = 0;
         total_read = 0;
         total_update = 0;
@@ -364,5 +366,11 @@ CMC_CREATE_UNIT(multimap_test, true, {
         cmc_assert_equals(ptr, NULL, map->callbacks);
 
         mm_free(map);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });
diff --git a/tests/main/unt/multiset.c b/tests/main/unt/multiset.c
index c057ad4..ccdb573 100644
--- a/tests/main/unt/multiset.c
+++ b/tests/main/unt/multiset.c
@@ -267,6 +267,8 @@ CMC_CREATE_UNIT(multiset_test, true, {
         struct multiset *set =
             ms_new_custom(100, 0.8, ms_ftab_val, NULL, callbacks);
 
+        cmc_assert_not_equals(ptr, NULL, set);
+
         total_create = 0;
         total_read = 0;
         total_update = 0;
@@ -342,5 +344,11 @@ CMC_CREATE_UNIT(multiset_test, true, {
         cmc_assert_equals(ptr, NULL, set->callbacks);
 
         ms_free(set);
+
+        total_create = 0;
+        total_read = 0;
+        total_update = 0;
+        total_delete = 0;
+        total_resize = 0;
     });
 });