diff --git a/libi2pd/util.h b/libi2pd/util.h
index 1a9b9a73..5297b3ed 100644
--- a/libi2pd/util.h
+++ b/libi2pd/util.h
@@ -33,6 +33,8 @@ namespace util
 	template<class T>
 	class MemoryPool
 	{
+		BOOST_STATIC_ASSERT_MSG(sizeof(T) >= sizeof(void*), "size cannot be less that general pointer size");
+
 		public:
 
 			MemoryPool (): m_Head (nullptr) {}