diff --git a/src/core/vector.hpp b/src/core/vector.hpp
index e6d66f91f..ec26334ea 100644
--- a/src/core/vector.hpp
+++ b/src/core/vector.hpp
@@ -149,6 +149,7 @@ public:
 
 	Vector& operator=(const Vector& rhs)
 	{
+		clear();
 		for (auto itr = rhs.begin(); itr != rhs.end(); itr++)
 		{
 			push_back(*itr);