My character can fly?

This is my first time trying the unreal engine. When I made my terrain I played as my character to see how it looked, I quickly found out that my character could fly. How do I fix this?

post some info and pictures on your current setup so we have something to work from. it may be as easy as setting enable gravity to true. or maybe you accidentally set the movement mode to flying. without know what kind of movement you added and what kind of scripts you are using its hard to give you a definitive do this type answer.