diff --git a/uppsrc/Core/Callback0.h b/uppsrc/Core/Callback0.h
index 49bd86300..c136add55 100644
--- a/uppsrc/Core/Callback0.h
+++ b/uppsrc/Core/Callback0.h
@@ -64,6 +64,8 @@ inline Callback Proxy(Callback& cb)
 
 Callback callback(Callback cb1, Callback cb2);
 Callback& operator<<(Callback& a, Callback b);
+inline
+Callback& operator<<(Callback& a, std::function<void ()> fn) { return a << Callback(lambda(fn)); };
 
 //0 args to Callback1
 
@@ -149,6 +151,12 @@ Callback1<P1>& operator<<(Callback1<P1>& a, Callback1<P1> b)
 	return a;
 }
 
+template <class P1>
+Callback1<P1>& operator<<(Callback1<P1>& a, std::function<void (P1)> b)
+{
+	return a << Callback(lambda(b));
+}
+
 //0 args to Callback2
 
 template <class O, class M, class P1, class P2>
diff --git a/uppsrc/CtrlCore/CtrlCore.h b/uppsrc/CtrlCore/CtrlCore.h
index cdecf6633..26de730a1 100644
--- a/uppsrc/CtrlCore/CtrlCore.h
+++ b/uppsrc/CtrlCore/CtrlCore.h
@@ -1135,7 +1135,9 @@ public:
 	bool         IsNullInstance() const        { return GetData().IsNull(); }
 
 	Callback     operator<<=(Callback action)  { WhenAction = action; return action; }
-	Callback&    operator<<(Callback action)   { return WhenAction << action; }
+
+	Callback&    operator<<(Callback action)                { return WhenAction << action; }
+	Callback&    operator<<(std::function<void ()> action)  { return WhenAction << action; }
 
 	void    SetTimeCallback(int delay_ms, Callback cb, int id = 0);
 	void    KillTimeCallback(int id = 0);