diff --git a/libevmcore/Assembly.cpp b/libevmcore/Assembly.cpp
index be35b62c2..c253ef68f 100644
--- a/libevmcore/Assembly.cpp
+++ b/libevmcore/Assembly.cpp
@@ -77,6 +77,20 @@ int AssemblyItem::deposit() const
 	return 0;
 }
 
+string AssemblyItem::getJumpTypeAsString() const
+{
+	switch (m_jumpType)
+	{
+	case JumpType::IntoFunction:
+		return "->";
+	case JumpType::OutOfFunction:
+		return "<-";
+	case JumpType::Ordinary:
+	default:
+		return "->";
+	}
+}
+
 unsigned Assembly::bytesRequired() const
 {
 	for (unsigned br = 1;; ++br)
@@ -205,7 +219,7 @@ ostream& Assembly::streamRLP(ostream& _out, string const& _prefix, StringMap con
 		switch (i.m_type)
 		{
 		case Operation:
-			_out << "  " << instructionInfo((Instruction)(byte)i.m_data).name;
+			_out << "  " << instructionInfo((Instruction)(byte)i.m_data).name  << "  " << i.getJumpTypeAsString( ) << endl;
 			break;
 		case Push:
 			_out << "  PUSH " << i.m_data;
diff --git a/libevmcore/Assembly.h b/libevmcore/Assembly.h
index cd71db747..8952deffd 100644
--- a/libevmcore/Assembly.h
+++ b/libevmcore/Assembly.h
@@ -42,6 +42,8 @@ class AssemblyItem
 	friend class Assembly;
 
 public:
+	enum class JumpType { Ordinary, IntoFunction, OutOfFunction };
+
 	AssemblyItem(u256 _push): m_type(Push), m_data(_push) {}
 	AssemblyItem(Instruction _i): m_type(Operation), m_data((byte)_i) {}
 	AssemblyItem(AssemblyItemType _type, u256 _data = 0): m_type(_type), m_data(_data) {}
@@ -58,13 +60,18 @@ public:
 	int deposit() const;
 
 	bool match(AssemblyItem const& _i) const { return _i.m_type == UndefinedItem || (m_type == _i.m_type && (m_type != Operation || m_data == _i.m_data)); }
-	void setLocation(SourceLocation const& _location) { m_location = _location;}
+	void setLocation(SourceLocation const& _location) { m_location = _location; }
 	SourceLocation const& getLocation() const { return m_location; }
 
+	void setJumpType(JumpType _jumpType) { m_jumpType = _jumpType; }
+	JumpType getJumpType() const { return m_jumpType; }
+	std::string getJumpTypeAsString() const;
+
 private:
 	AssemblyItemType m_type;
 	u256 m_data;
 	SourceLocation m_location;
+	JumpType m_jumpType;
 };
 
 using AssemblyItems = std::vector<AssemblyItem>;