Can't open .ui files if path has space

When I try to edit a .ui file I get an error that the file can't be opened. I've narrowed this down to being caused by there being a space in the folder name my project is stored inside. I'm betting that you're sending the file name to the designer using a command line call but you're not surrounding the path with quotes so it's interpreting the path with the space as two separate paths instead of just one..