I worked for 1 week in a company in IL, but parent company (and W-2) have employer's address in IN. Box 15 lists state as IL. Do I need to file in IN or IL? Made $405

As mentioned in question, I'm unsure if I have to file state taxes in Indiana. Worked for a company in IL for 1 week and made $405.  W-2 comes for that company and parent company's address in box c. is listed in Indiana.  Box 15 lists the state as IL.  I live in IL and all of my other income is from IL. I know I have to file all of my other income for IL, but do I need to file in a second state as well?