diff --git a/src/backends/redis/script.cpp b/src/backends/redis/script.cpp
index af7eeac..d88ec39 100644
--- a/src/backends/redis/script.cpp
+++ b/src/backends/redis/script.cpp
@@ -18,9 +18,15 @@
 #include "script.hpp"
 
 namespace redis {
+	Script::Script() :
+		m_sha1(),
+		m_manager(nullptr)
+	{
+	}
+
 	Script::Script (boost::string_ref parSha1, ScriptManager& parManager) :
 		m_sha1(parSha1),
-		m_manager(parManager)
+		m_manager(&parManager)
 	{
 	}
 } //namespace redis
diff --git a/src/backends/redis/script.hpp b/src/backends/redis/script.hpp
index e169bf6..033469c 100644
--- a/src/backends/redis/script.hpp
+++ b/src/backends/redis/script.hpp
@@ -23,12 +23,15 @@
 #include "helpers/sequence_bt.hpp"
 #include <boost/utility/string_ref.hpp>
 #include <tuple>
+#include <cassert>
+#include <ciso646>
 
 namespace redis {
 	class ScriptManager;
 
 	class Script {
 	public:
+		Script ( void );
 		Script ( Script&& ) = default;
 		Script ( boost::string_ref parSha1, ScriptManager& parManager );
 		~Script ( void ) noexcept = default;
@@ -36,12 +39,14 @@ namespace redis {
 		template <typename... Keys, typename... Values>
 		void run ( Batch& parBatch, const std::tuple<Keys...>& parKeys, const std::tuple<Values...>& parValues );
 
+		Script& operator= ( Script&& ) = default;
+
 	private:
 		template <typename... Keys, typename... Values, std::size_t... KeyIndices, std::size_t... ValueIndices>
 		void run_with_indices ( Batch& parBatch, const std::tuple<Keys...>& parKeys, const std::tuple<Values...>& parValues, dinhelp::bt::index_seq<KeyIndices...>, dinhelp::bt::index_seq<ValueIndices...> );
 
 		boost::string_ref m_sha1;
-		ScriptManager& m_manager;
+		ScriptManager* m_manager;
 	};
 
 	template <typename... Keys, typename... Values>
@@ -62,6 +67,9 @@ namespace redis {
 		static_assert(sizeof...(Keys) == std::tuple_size<decltype(parKeys)>::value, "Wrong key count");
 		static_assert(sizeof...(Values) == std::tuple_size<decltype(parValues)>::value, "Wrong value count");
 
+		assert(not m_sha1.empty());
+		assert(m_manager);
+
 		parBatch.run(
 			"EVALSHA",
 			m_sha1,