If the typedef is visible, that's fine -- you just need to call it "configurationOptions" (since that's the name you gave it in the typedef) instead of "struct configurationsOptions".
Edit to add: At this point, I would say, if you have most of your code referring to "struct configurationOptions" to not typedef it but make it a named struct; if it's just a few mentions, go ahead and change those mentions. There's no advantage either way (typedef vs. named struct), so do whatever causes the least amount of typing at this point.