diff --git a/tests/pointertype.c b/tests/pointertype.c
index af320dc..2453e48 100644
--- a/tests/pointertype.c
+++ b/tests/pointertype.c
@@ -3,16 +3,21 @@
 #include "../src/macro_collections.h"
 #include <stdio.h>
 
-COLLECTION_GENERATE(LIST, PUBLIC, l, list, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(STACK, PUBLIC, s, stack, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(QUEUE, PUBLIC, q, queue, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(DEQUE, PUBLIC, d, deque, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(LINKEDLIST, PUBLIC, ll, linked, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(HEAP, PUBLIC, h, heap, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(TREESET, PUBLIC, ts, tset, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(TREEMAP, PUBLIC, tm, tmap, /* FMOD */, char *, char *)
-COLLECTION_GENERATE(HASHSET, PUBLIC, hs, hset, /* FMOD */, /* K */, char *)
-COLLECTION_GENERATE(HASHMAP, PUBLIC, hm, hmap, /* FMOD */, char *, char *)
+typedef struct my_struct_s
+{
+    int a, b;
+} my_struct;
+
+COLLECTION_GENERATE(LIST, PUBLIC, l, list, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(STACK, PUBLIC, s, stack, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(QUEUE, PUBLIC, q, queue, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(DEQUE, PUBLIC, d, deque, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(LINKEDLIST, PUBLIC, ll, linked, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(HEAP, PUBLIC, h, heap, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(TREESET, PUBLIC, ts, tset, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(TREEMAP, PUBLIC, tm, tmap, /* FMOD */, my_struct *, my_struct *)
+COLLECTION_GENERATE(HASHSET, PUBLIC, hs, hset, /* FMOD */, /* K */, my_struct *)
+COLLECTION_GENERATE(HASHMAP, PUBLIC, hm, hmap, /* FMOD */, my_struct *, my_struct *)
 
 int main(void)
 {