diff --git a/include/util/static_assert.hpp b/include/util/static_assert.hpp
index f1e24c881..234b26391 100644
--- a/include/util/static_assert.hpp
+++ b/include/util/static_assert.hpp
@@ -8,14 +8,14 @@ namespace osrm::util
 
 template <typename It, typename Value> inline void static_assert_iter_value()
 {
-    // using IterValueType = typename std::iterator_traits<It>::value_type;
-    // static_assert(std::is_same<IterValueType, Value>::value, "");
+    using IterValueType = typename std::iterator_traits<It>::value_type;
+    static_assert(std::is_same<IterValueType, Value>::value, "");
 }
 
 template <typename It, typename Category> inline void static_assert_iter_category()
 {
-    // using IterCategoryType = typename std::iterator_traits<It>::iterator_category;
-    // static_assert(std::is_base_of<Category, IterCategoryType>::value, "");
+    using IterCategoryType = typename std::iterator_traits<It>::iterator_category;
+    static_assert(std::is_base_of<Category, IterCategoryType>::value, "");
 }
 
 } // namespace osrm::util