Why Is My Human Writing Flagged as AI? What to Do Next

If you wrote a document yourself and an AI detector flags it, preserve the submitted version and ask for a contextual review. Do not immediately rewrite it to lower the score. A detector result is a prediction, not a record of who typed the words.

This guide is for students, freelance writers and employees responding to a disputed result. It provides a practical response process, not a promise that any particular appeal will succeed.

Why can human writing be flagged as AI?

AI detectors can make false-positive errors: they identify human-authored writing as likely AI-generated. They can also miss generated writing. Grammarly's explanation of detector accuracy describes both errors and notes that edited or mixed human-and-AI text makes results less predictable.

That does not identify the cause of your particular flag. A report alone cannot establish that your vocabulary, punctuation, writing style or editing software caused the result. Avoid explanations such as “this word proves AI” unless there is evidence for the specific claim.

Nor does a highlighted passage establish misconduct. Turnitin's own report-review guidance says its result should be considered with other information and educator judgment, not treated as a definitive answer in isolation. The same caution is appropriate when reviewing a Certaffy result.

First, preserve what was actually checked

Create a small review folder before editing anything. Keep:

• The exact submitted file and a plain-text copy of its contents.
• The full detection report, including highlighted passages, date and tool name if available.
• The assignment brief or client instructions that applied when you wrote it.
• Existing drafts, notes and source material relevant to the disputed passages.
• An honest account of any grammar, translation, brainstorming or drafting assistance used.

Do not manufacture an earlier draft or recreate a writing history after the event. If you drafted offline or in another application, say so. Missing history is not, by itself, evidence of AI use; Originality.ai also makes this distinction in its guidance on disputed flags.

Check the input before debating the score

Compare the report's text with your original. Are quotations, references, headings or a pasted assignment question included? Did the PDF extraction join columns, repeat headers or omit paragraphs? Record discrepancies without silently removing material from the original submission.

If you compare two scans, use the same text and note any changed settings. A new score on a changed document does not explain the old result. Our PDF extraction checklist explains what to inspect before drawing conclusions from an uploaded file.

Read the passages, not only the headline percentage. Highlight coverage and document scores answer different questions; neither is an independently verified account of how the document was written.

Make your explanation specific

For each disputed section, connect a writing decision to something you can show. For example: “I changed this paragraph after comparing the two studies in my notes,” followed by the relevant notes and source pages. Explain how the argument developed rather than claiming that a low score from another detector proves authorship.

A useful review note has four fields: the disputed passage, your explanation, the supporting record and anything still uncertain. Share only the material needed for the review; do not expose unrelated private notes, customer information or research data.

Here is an original message you can adapt truthfully:

Could we review the flagged passages together? I have kept the submitted version and can explain how I developed the argument. I can provide the drafts and source notes I still have. Please share the full report, the policy being applied and the next steps in the review process. I would like the decision to consider this evidence alongside the detector result.

If you used AI assistance, describe it accurately. See our AI-use disclosure examples. Disclosure does not retroactively make prohibited assistance permissible.

Should I keep rewriting until the AI score is zero?

No. Improve a passage because it is unclear, unsupported or inaccurate—not merely because a detector highlights it. Repeatedly changing authentic writing to satisfy a score can obscure the original evidence. Adding deliberate mistakes is not a reliable authorship test either.

Can Certaffy prove that I wrote my essay?

No. You can use Certaffy's AI detector as one review aid, but it can produce false positives and false negatives. An unflagged result is not proof of human authorship, just as a flagged result is not proof of cheating. Keep the review focused on the work, its sources, the writing process and the applicable rules.

Prepared with AI assistance for Certaffy. Sources checked on October 22, 2026. The checklist and message are illustrative, not an institutional appeals procedure.