Topic: Ol' Red chords as recorded by Blake Shelton

Just asking about basic chords submitted for songs. I have a student who wants to learn "Ol' Red"- Blake Shelton's version. It seems all posting of this song are in E (as in E major) and not Em (as in E minor). The difference is basic music theory so, am I missing something? Went ahead and chord-notated myself and can play along with the recorded version (capo 1). The chords listed on-line are close, but not correct. Any reason for this? Ideas? I want to submit a version that matches the music...Thanks, Bill in New Orleans