diff --git a/include/criterion/parameterized.h b/include/criterion/parameterized.h
index a3c199f..135fbe4 100644
--- a/include/criterion/parameterized.h
+++ b/include/criterion/parameterized.h
@@ -38,11 +38,11 @@
     static struct criterion_test_params IDENTIFIER_(Category, Name, param)(void)
 
 # ifdef __cplusplus
-#  define cr_make_param_array(Type, Array, Length) \
-    criterion_test_params(sizeof (Type), (Array), (Length))
+#  define cr_make_param_array(Type, Array, ...) \
+    criterion_test_params(sizeof (Type), (Array), __VA_ARGS__)
 # else
-#  define cr_make_param_array(Type, Array, Length) \
-    (struct criterion_test_params) { sizeof (Type), (void*)(Array), (Length) }
+#  define cr_make_param_array(Type, Array, ...) \
+    (struct criterion_test_params) { sizeof (Type), (void*)(Array), __VA_ARGS__ }
 # endif
 
 #endif /* !CRITERION_PARAMETERIZED_H_ */
diff --git a/include/criterion/types.h b/include/criterion/types.h
index bbb11aa..93a54c9 100644
--- a/include/criterion/types.h
+++ b/include/criterion/types.h
@@ -42,6 +42,7 @@ struct criterion_test_params {
     size_t size;
     void *params;
     size_t length;
+    void (*cleanup)(struct criterion_test_params *);
 
 # ifdef __cplusplus
     constexpr criterion_test_params(size_t size, void *params, size_t length)
@@ -49,6 +50,14 @@ struct criterion_test_params {
         , params(params)
         , length(length)
     {}
+
+    constexpr criterion_test_params(size_t size, void *params, size_t length,
+            void (*cleanup)(struct criterion_test_params *))
+        : size(size)
+        , params(params)
+        , length(length)
+        , cleanup(cleanup)
+    {}
 # endif
 };
 
diff --git a/samples/parameterized.c b/samples/parameterized.c
index 0d9ab2e..9c6c863 100644
--- a/samples/parameterized.c
+++ b/samples/parameterized.c
@@ -1,4 +1,7 @@
 #include <criterion/parameterized.h>
+#include <stdio.h>
+
+// Basic usage
 
 ParameterizedTestParameters(params, str) {
     static const char *strings[] = {
@@ -9,5 +12,63 @@ ParameterizedTestParameters(params, str) {
 }
 
 ParameterizedTest(const char **str, params, str) {
-    cr_assert(0, "Parameter: %s", *str);
+    cr_assert_fail("Parameter: %s", *str);
+}
+
+// Multiple parameters must be coalesced in a single parameter
+
+struct parameter_tuple {
+    int i;
+    double d;
+};
+
+ParameterizedTestParameters(params, multiple) {
+    static struct parameter_tuple params[] = {
+        {1, 2},
+        {3, 4},
+        {5, 6},
+    };
+
+    return cr_make_param_array(struct parameter_tuple, params, sizeof (params) / sizeof (struct parameter_tuple));
+}
+
+ParameterizedTest(struct parameter_tuple *tup, params, multiple) {
+    cr_assert_fail("Parameters: (%d, %f)", tup->i, tup->d);
+}
+
+// Cleaning up dynamically generated parameters
+
+// Note: Do **NOT** embed dynamically allocated pointers inside of structures
+// or this will fail on windows
+
+void free_params(struct criterion_test_params *crp) {
+    struct parameter_tuple_dyn *tuples = crp->params;
+    for (size_t i = 0; i < crp->length; ++i) {
+        struct parameter_tuple_dyn *tup = &tuples[i];
+        free(tup->d);
+    }
+    free(crp->params);
+}
+
+double *gen_double(double d) {
+    double *ptr = malloc(sizeof(double));
+    printf("%p\n", ptr);
+    fflush(NULL);
+    *ptr = d;
+    return ptr;
+}
+
+ParameterizedTestParameters(params, cleanup) {
+    const size_t nb_tuples = 3;
+
+    struct parameter_tuple_dyn *params = malloc(sizeof(struct parameter_tuple_dyn) * nb_tuples);
+    params[0] = (struct parameter_tuple_dyn) { 1, gen_double(2) };
+    params[1] = (struct parameter_tuple_dyn) { 3, gen_double(4) };
+    params[2] = (struct parameter_tuple_dyn) { 5, gen_double(6) };
+
+    return cr_make_param_array(struct parameter_tuple_dyn, params, nb_tuples, free_params);
+}
+
+ParameterizedTest(struct parameter_tuple_dyn *tup, params, cleanup) {
+    cr_assert_fail("Parameters: (%d, %p)", tup->i, tup->d);
 }
diff --git a/src/core/runner.c b/src/core/runner.c
index cd3f13b..a998843 100644
--- a/src/core/runner.c
+++ b/src/core/runner.c
@@ -396,6 +396,9 @@ static void run_test_param(struct criterion_global_stats *stats,
         if (!is_runner())
             break;
     }
+
+    if (params.cleanup)
+        params.cleanup(&params);
 }
 
 static void run_test_switch(struct criterion_global_stats *stats,