diff --git a/py/obj.c b/py/obj.c
index 3e4164d..7905f05 100644
--- a/py/obj.c
+++ b/py/obj.c
@@ -116,6 +116,8 @@
     } else if (MP_OBJ_IS_TYPE(o1, &str_type) && MP_OBJ_IS_TYPE(o2, &str_type)) {
         return mp_obj_str_get(o1) == mp_obj_str_get(o2);
     } else {
+        // TODO: Debugging helper
+        printf("Equality for '%s' and '%s' types not yet implemented\n", mp_obj_get_type_str(o1), mp_obj_get_type_str(o2));
         assert(0);
         return false;
     }