diff --git a/src/SerializedTypes.cpp b/src/SerializedTypes.cpp
index 2a6b0f978e..da96fa5373 100644
--- a/src/SerializedTypes.cpp
+++ b/src/SerializedTypes.cpp
@@ -463,6 +463,14 @@ std::string STPathSet::getText() const
 }
 #endif
 
+STPathSet& STPathSet::operator=(const STPathSet& p)
+{
+	if (name == NULL)
+		name = p.name;
+	value = p.value;
+	return *this;
+}
+
 void STPathSet::add(Serializer& s) const
 {
 	bool bFirst = true;
diff --git a/src/SerializedTypes.h b/src/SerializedTypes.h
index 1ba0793ad3..7b7aa562b9 100644
--- a/src/SerializedTypes.h
+++ b/src/SerializedTypes.h
@@ -668,6 +668,7 @@ public:
 	void addPath(const STPath& e)						{ value.push_back(e); }
 
 	virtual bool isEquivalent(const SerializedType& t) const;
+	STPathSet& operator=(const STPathSet&);
 
 	std::vector<STPath>::iterator begin()				{ return value.begin(); }
 	std::vector<STPath>::iterator end()					{ return value.end(); }