diff --git a/container/src/root/src/internal/impl/hash.hh b/container/src/root/src/internal/impl/hash.hh
index 814c6cf..94ab406 100644
--- a/container/src/root/src/internal/impl/hash.hh
+++ b/container/src/root/src/internal/impl/hash.hh
@@ -118,7 +118,7 @@ class HashImpl : public ::dfi::internal::Transform<t_impl>
         message.push_back(decoded);
       }
 
-    return t_impl::that()->template hash<t_hash, t_encoded>(message);
+    return this->t_impl::that()->template hash<t_hash, t_encoded>(message);
   }
 
   //! \brief
@@ -142,7 +142,7 @@ class HashImpl : public ::dfi::internal::Transform<t_impl>
     static_assert(
         std::is_same_v<t_encoded, std::string>, "Hash interface has changed");
 
-    return t_impl::that()->template hash<t_hash, t_encoded>(decoded);
+    return this->t_impl::that()->template hash<t_hash, t_encoded>(decoded);
   }
 };
 }  // namespace common
diff --git a/container/src/root/src/internal/impl/random.hh b/container/src/root/src/internal/impl/random.hh
index 6819f36..09feed7 100644
--- a/container/src/root/src/internal/impl/random.hh
+++ b/container/src/root/src/internal/impl/random.hh
@@ -82,7 +82,7 @@ class RandomImpl : public ::dfi::internal::Random<t_impl>
         type::is_real_integral<t_random>::value,
         "Random interface has changed");
 
-    return t_impl::that()->template generate<t_random>();
+    return this->t_impl::that()->template generate<t_random>();
   }
 };
 }  // namespace common