bluetooth "Call Home" has 2 options

[AC Question]

When I use my car;s bluetooth to call "Home" (set as a speed dial), the bluetooth comes up with 2 and asks me which one to call (1. home or 2. Home). When I ask for number 2, it says "No number Assigned". What's going on? It is just irritating to have to tell it "No. 1" before I can call, when I only have one number. Is there a default for "Home" that I'm not using?