Blurry tiles?

[igloo9]

I imported a bunch of tiles. 25 tilesets to be exact. Two of them, for some reason, are really blurry/pixelated. They look normal outside of Eclipse, but when I open up the map editor, those two tilesets are screwed up.

Is there any particular reason why? How do I fix it?

Edit: Never mind. The tiles were too large. I guess if they go past a certain vertical length, they get blurry.