diff --git a/gloop/util/gtl/string_hash_map.h b/gloop/util/gtl/string_hash_map.h
index e97ac11a..2dbaab5a 100644
--- a/gloop/util/gtl/string_hash_map.h
+++ b/gloop/util/gtl/string_hash_map.h
@@ -414,7 +414,7 @@ struct Policy
         });
   }
 
-  template <class Hash, bool kIsDefault>
+  template <class Hash, bool kIsDefault, size_t kSeedShift>
   static constexpr absl::container_internal::HashSlotFn get_hash_slot_fn() {
     return nullptr;
   }
diff --git a/gloop/util/gtl/string_hash_set.h b/gloop/util/gtl/string_hash_set.h
index 68f28f9a..2d7911b4 100644
--- a/gloop/util/gtl/string_hash_set.h
+++ b/gloop/util/gtl/string_hash_set.h
@@ -185,7 +185,7 @@ struct Policy : absl::container_internal::node_slot_policy<Node&, Policy> {
     return std::forward<F>(f)(s, s);
   }
 
-  template <class Hash, bool kIsDefault>
+  template <class Hash, bool kIsDefault, size_t kSeedShift>
   static constexpr absl::container_internal::HashSlotFn get_hash_slot_fn() {
     return nullptr;
   }