Static, private member of a class internal type

I've a class myClass that has a type defined in it, myType, and a static const std::map that uses this type. How must I initialise the member?

The situation is like this. The compiler tells me: multiple definition of MyClass::myMap. But there is really only one definition. Is the (schematically) initialisation correct?

class myClass
{
  struct myType
  {
    // ...
  }
  static const std::map<int, myType> myMap;
};

const myClass::std::map<int, myType> myMap = {
  {1, {"hello myType", 99, "woops"}},
  {2, {"hello again", 66, "holla"}},
  {3, {"and bye", 33, "adios"}},
};