diff --git a/test/fff_test_c.c b/test/fff_test_c.c
index 5a00525..fc3bd50 100644
--- a/test/fff_test_c.c
+++ b/test/fff_test_c.c
@@ -89,6 +89,7 @@ int main()
     RUN_TEST(FFFTestSuite, default_constants_can_be_overridden);
 
     RUN_TEST(FFFTestSuite, can_register_custom_fake);
+    RUN_TEST(FFFTestSuite, when_value_custom_fake_called_THEN_it_returns_custom_return_value);
 
     printf("\n-------------\n");
     printf("Complete\n");
diff --git a/test/fff_test_global_c.c b/test/fff_test_global_c.c
index 4c0e252..6f6d640 100644
--- a/test/fff_test_global_c.c
+++ b/test/fff_test_global_c.c
@@ -59,6 +59,7 @@ int main()
     RUN_TEST(FFFTestSuite, return_value_sequences_exhausted);
 
     RUN_TEST(FFFTestSuite, can_register_custom_fake);
+    RUN_TEST(FFFTestSuite, when_value_custom_fake_called_THEN_it_returns_custom_return_value);
 
     printf("\n-------------\n");
     printf("Complete\n");