Any suggestions?? dog problem..

[snakers55]

Hey everyone, I'm getting pretty annoyed with my dog.. He's about 15 years old and as of the last few months, has been going to the washroom in our hallway almost everyday, usually just pees, but sometimes both.. It's pretty gross to get out of bed,open your door and step in a nice pool of dog urine.. Can this problem be fixed or is it just his age?? He never did this ever before but now is a regular thing.. What can I do??