diff --git a/libs/util/include/psemek/util/hash_table.hpp b/libs/util/include/psemek/util/hash_table.hpp
index 389723f6..983f1ac9 100644
--- a/libs/util/include/psemek/util/hash_table.hpp
+++ b/libs/util/include/psemek/util/hash_table.hpp
@@ -493,6 +493,16 @@ namespace psemek::util
 			return true;
 		}
 
+		bool erase(T const & key)
+		{
+			if (auto it = find(key); it != end())
+			{
+				erase(it);
+				return true;
+			}
+			return false;
+		}
+
 		template <typename Key>
 		bool erase(Key const & key)
 		{
@@ -581,12 +591,22 @@ namespace psemek::util
 			return impl_.insert(std::move(value));
 		}
 
+		iterator find(Key const & key) const
+		{
+			return impl_.find(key);
+		}
+
 		template <typename Key1>
 		iterator find(Key1 const & key) const
 		{
 			return impl_.find(key);
 		}
 
+		bool contains(Key const & key) const
+		{
+			return find(key) != end();
+		}
+
 		template <typename Key1>
 		bool contains(Key1 const & key) const
 		{
@@ -599,6 +619,16 @@ namespace psemek::util
 			return true;
 		}
 
+		bool erase(Key const & key)
+		{
+			if (auto it = find(key); it != end())
+			{
+				erase(it);
+				return true;
+			}
+			return false;
+		}
+
 		template <typename Key1>
 		bool erase(Key1 const & key)
 		{