diff --git a/lib/base/scriptsignal.cpp b/lib/base/scriptsignal.cpp
index 4c64ccbf9..e78fade6c 100644
--- a/lib/base/scriptsignal.cpp
+++ b/lib/base/scriptsignal.cpp
@@ -27,7 +27,7 @@ void ScriptSignal::AddSlot(const Callback& slot)
 	m_Slots.push_back(slot);
 }
 
-Value ScriptSignal::Invoke(const std::vector<Value>& arguments)
+void ScriptSignal::Invoke(const std::vector<Value>& arguments)
 {
 	BOOST_FOREACH(const Callback& slot, m_Slots)
 		slot(arguments);
diff --git a/lib/base/scriptsignal.hpp b/lib/base/scriptsignal.hpp
index 15f434d8f..76cea5c75 100644
--- a/lib/base/scriptsignal.hpp
+++ b/lib/base/scriptsignal.hpp
@@ -41,7 +41,7 @@ public:
 	typedef boost::function<void (const std::vector<Value>& arguments)> Callback;
 
 	void AddSlot(const Callback& slot);
-	Value Invoke(const std::vector<Value>& arguments = std::vector<Value>());
+	void Invoke(const std::vector<Value>& arguments = std::vector<Value>());
 
 	static ScriptSignal::Ptr GetByName(const String& name);
 	static void Register(const String& name, const ScriptSignal::Ptr& signal);