How long do minor corrections take?

The deadline for minor corrections is set by your institution, not the candidate. At most UK universities it is three months, though Manchester often sets four weeks for straightforward cases and Leeds distinguishes between simple typographical corrections (four weeks) and minor deficiencies requiring more work (twelve weeks). In the US, the equivalent is usually tied to the graduate school's semester submission deadline — often 60 to 90 days after the defense. How long the work actually takes depends on the volume and nature of the corrections list, but most candidates complete minor corrections in two to eight weeks.

Can you fail corrections?

Yes, though it is uncommon. If you submit corrections that do not adequately address the examiners' concerns, the internal examiner can reject them and require further work, or in serious cases escalate to the graduate board. You will normally be given an opportunity to revise again rather than lose the degree outright. The more realistic risk is letting the deadline pass — if you need more time, contact your graduate office before the deadline expires, not after.

Do examiners re-read the whole thesis after major corrections?

Usually not the whole thesis. Examiners reviewing major corrections typically read the sections that were flagged and check that the changes make sense in context — they are not starting from scratch. A clear response document that maps each correction to the relevant pages makes this significantly easier and faster for them. For a revise-and-resubmit, the re-examination is more thorough and may involve a second viva.

What is the difference between major corrections and revise-and-resubmit?

Major corrections mean your submitted thesis can be passed once specific changes are made. The examiners have already decided you deserve the degree, subject to those changes. Revise-and-resubmit means the thesis cannot currently be passed — you must produce a substantially revised version and submit it as a new thesis for formal re-examination, usually including a second viva. The distinction matters because revise-and-resubmit typically adds twelve months or more to your timeline and requires a second oral.

Who signs off my corrections — the internal or external examiner?

For minor corrections at most UK institutions, the internal examiner alone is responsible for verifying and approving the changes. For major corrections, both examiners are usually required to certify the revised thesis before the degree can be recommended. The joint examiners' report from your viva should specify this; if it does not, ask your graduate administrator.

Does the corrections period affect when I can use the title 'Dr'?

Technically yes — the degree is not conferred until the corrections are approved and the administrative process is complete. In practice, many institutions allow candidates to use the title informally from the point the viva result is communicated, with the understanding that conferral is pending. The formal right to the title comes with the degree certificate. If you need the qualification verified for a job or visa application, ask your registry for a letter confirming the expected conferral date.

Guide

PhD Viva Corrections Explained: Minor, Major, and What Happens Next

Corrections after a viva are normal — not a near-fail. Most PhD candidates in the UK receive minor corrections, which typically carry a deadline of three months (some institutions allow as few as four weeks for straightforward cases). Major corrections usually allow six months, occasionally twelve in exceptional circumstances. In the US, post-defense revisions tend to be lighter and are usually signed off by your advisor or committee chair within a few weeks to a few months of the defense.

Last updated June 1, 2026

Why almost everyone gets some corrections

Examiners read a thesis with a level of attention the candidate, the supervisor, and every pre-submission reader did not. A final-year document of 80,000 words, often written under time pressure, will almost always contain typos, a few ambiguous sentences, a reference that does not match the bibliography, or a paragraph that would be clearer with one more example. Corrections exist to bring the submitted text up to the standard expected of the finished work.

That is the ordinary explanation for minor corrections. Major corrections are a different matter — they mean the examiners found a substantive gap that must be addressed before they will recommend the degree. Even then, the degree is still in reach. A revise-and-resubmit outcome (distinct from corrections, see below) is rarer and more demanding, but it is not a fail.

Minor corrections: what they involve and who signs them off

Minor corrections are editorial and presentational changes that do not alter the substance of the thesis. They do not require new data collection, new analysis, or restructuring of the argument. What they typically include:

Correcting typographical errors throughout the text.
Clarifying ambiguous sentences or adding a short explanatory sentence where the examiner found the argument unclear.
Fixing inconsistencies in references, citations, or bibliographic formatting.
Replacing or redrawing a figure or table where labelling was confusing.
Adding a brief literature paragraph the examiner felt was missing from the review.
Expanding a limitations section or the discussion of implications.

Deadlines vary by institution. The University of Edinburgh sets a standard limit of three months. The University of Manchester normally allows four weeks but may extend to twelve weeks where the volume of corrections warrants it. The University of Sheffield uses a three-month window. Leeds distinguishes between minor editorial errors (four weeks) and minor deficiencies requiring more work (twelve weeks, with a planned extension to six months from September 2026).

Who approves them: in most UK institutions, minor corrections are reviewed and signed off by the internal examiner alone. The external examiner is not usually required to re-read the corrected thesis, though some examiners request sight of specific sections. Check your institution's regulations — the joint examiners' report will normally specify who is responsible for approval.

Major corrections and revise-and-resubmit: the difference

Major corrections require substantive work that goes beyond editing. They might mean re-running an analysis with a corrected dataset, adding a new chapter section, writing a more thorough literature review on a topic the examiners found inadequately covered, or revising the theoretical framing of a chapter. The thesis needs real intellectual work, not just careful reading.

Standard deadlines: six months is the norm across most UK institutions. The University of Edinburgh allows up to twelve months in exceptional circumstances. Sheffield records major corrections with a six-month window and resubmissions on a separate twelve-month track. You will not usually need to sit a second viva to have major corrections approved — both examiners typically re-read the revised thesis and certify it without another oral.

Revise and resubmit is a distinct category. It means the thesis cannot currently be passed, but the examiners believe the candidate is capable of producing a passable thesis with substantial further work. This usually involves twelve months or more, full resubmission of a new thesis document, and a second viva — effectively a second examination. It is worth asking your examiners at the viva, or your supervisor afterwards, whether the outcome is corrections or revise-and-resubmit, because the two have very different implications for your timeline and registration.

Working through your corrections list

Before you open the document, get the corrections list in a form you can work from. If the examiners delivered feedback verbally in the viva, write it up the same day — your recollection will degrade. Ask your internal examiner to confirm the list in writing, or to clarify any items that were ambiguous.

Number every correction request, even if it appears minor. Unnumbered lists are hard to track.
For any item that is unclear, ask before you start working — not after. A brief email to the internal examiner asking for clarification is normal and expected.
Open a response document alongside your thesis. For each correction, record the examiner's request, what change you made, and the page reference in the revised thesis. This document goes to the examiner with your submission and makes sign-off much faster.
Work section by section, not alphabetically. Corrections often cluster around a single chapter, and fixing them in context reduces the risk of introducing inconsistencies.
If a correction request seems to contradict something the other examiner said in the viva, raise it. The two examiners are required to agree the list; contradictions should be resolved before you make changes.

A response document — sometimes called a corrections report or a point-by-point response — is not always required but is widely appreciated. It demonstrates that you engaged with each comment seriously and makes it easy for the examiner to verify changes without re-reading every page. Several departments now request one as standard.

Timelines to degree conferral: UK and US

In the UK, the clock usually starts from the date you receive the formal written corrections list, not the viva date. Build in time for that gap — it can be one to three weeks after the oral. Once you submit the corrected thesis, the internal examiner's review typically takes a few weeks; the degree is then formally conferred at the next available congregation or through an in-absentia process. From viva to conferral with minor corrections: roughly two to five months is realistic at most UK institutions.

With major corrections, the realistic window from viva to conferral is more like nine to fifteen months — six months to complete the work, then time for examiner review and the administrative process. Institutions differ, so treat that as a rough range rather than a guarantee.

In the United States, the process is lighter at most institutions. Post-defense revisions are typically reviewed and approved by the committee chair or the full committee, not through a formal two-examiner approval process. Graduate school deadlines for final dissertation submission vary — some institutions set a 60-day window, others allow up to three months. Degree conferral is tied to fixed graduation dates (usually December, May, and August at most research universities), so the practical question is whether your corrections can be completed in time to meet the semester's submission deadline.

Frequently asked questions

How long do minor corrections take?: The deadline for minor corrections is set by your institution, not the candidate. At most UK universities it is three months, though Manchester often sets four weeks for straightforward cases and Leeds distinguishes between simple typographical corrections (four weeks) and minor deficiencies requiring more work (twelve weeks). In the US, the equivalent is usually tied to the graduate school's semester submission deadline — often 60 to 90 days after the defense. How long the work actually takes depends on the volume and nature of the corrections list, but most candidates complete minor corrections in two to eight weeks.
Can you fail corrections?: Yes, though it is uncommon. If you submit corrections that do not adequately address the examiners' concerns, the internal examiner can reject them and require further work, or in serious cases escalate to the graduate board. You will normally be given an opportunity to revise again rather than lose the degree outright. The more realistic risk is letting the deadline pass — if you need more time, contact your graduate office before the deadline expires, not after.
Do examiners re-read the whole thesis after major corrections?: Usually not the whole thesis. Examiners reviewing major corrections typically read the sections that were flagged and check that the changes make sense in context — they are not starting from scratch. A clear response document that maps each correction to the relevant pages makes this significantly easier and faster for them. For a revise-and-resubmit, the re-examination is more thorough and may involve a second viva.
What is the difference between major corrections and revise-and-resubmit?: Major corrections mean your submitted thesis can be passed once specific changes are made. The examiners have already decided you deserve the degree, subject to those changes. Revise-and-resubmit means the thesis cannot currently be passed — you must produce a substantially revised version and submit it as a new thesis for formal re-examination, usually including a second viva. The distinction matters because revise-and-resubmit typically adds twelve months or more to your timeline and requires a second oral.
Who signs off my corrections — the internal or external examiner?: For minor corrections at most UK institutions, the internal examiner alone is responsible for verifying and approving the changes. For major corrections, both examiners are usually required to certify the revised thesis before the degree can be recommended. The joint examiners' report from your viva should specify this; if it does not, ask your graduate administrator.
Does the corrections period affect when I can use the title 'Dr'?: Technically yes — the degree is not conferred until the corrections are approved and the administrative process is complete. In practice, many institutions allow candidates to use the title informally from the point the viva result is communicated, with the understanding that conferral is pending. The formal right to the title comes with the degree certificate. If you need the qualification verified for a job or visa application, ask your registry for a letter confirming the expected conferral date.

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