Unplug your refrigerator and open the door. Notice the rubber lining on the inside of the refrigerator door.
Lift the lining up at the sides to expose the screws underneath the lining. You can use a putty knife to pry the lining off the side of the refrigerator if necessary.
Tighten any screws with your flat-head screwdriver where the lining is loose.
Run a line of hobby glue along any part of the liner that doesn't adhere to the refrigerator door. Press the liner back into place. Wait about five minutes for the glue to dry.