Despite the fact that some plagiarism detectors ignore up to 10% of plagiarism because some amount of verbatim copying is often required when writing, there are still occasions where false positives arise. This is even more common if your text has repeated the same phrase over and over again. For example, you may be writing about a celebrity who frequently uses the same phrase. Such a phrase would appear as a false positive because it appears numerous times on your text and a great many times on other people's online content.