Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
change where necessary
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "change where necessary" is correct and usable in written English.
It can be used when instructing someone to make adjustments or modifications as needed in a given context. Example: "Please review the document and change where necessary to ensure accuracy and clarity."
✓ Grammatically correct
News & Media
Science
Wiki
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
2 human-written examples
It is a mildly encouraging sign that more people are demanding change, where necessary in ways that bypass formal politics.
News & Media
All screened participants received personal written feedback from their GPs, including advice on lifestyle change (where necessary) and information leaflets about a healthy lifestyle.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
"We are prepared to make changes where necessary as soon as we could," he said.
News & Media
It's right that we look at the impact this has on our laws and make any changes where necessary.
News & Media
In Florida, he noted, "People have lived and learned through so many storms and had the opportunity to make changes where necessary.
News & Media
Improve its complaints handling and response systems, and introduce changes where necessary.
News & Media
Honest coaches don't make excuses; they keep moving on, believing in their abilities and making changes where necessary.
News & Media
He added that legislation being considered by Parliament would give councils new powers to address all current licences and make changes where necessary.
News & Media
Employers have little more to do than review their risk management in the light of new information received and implement changes where necessary [9].
This is taken by zoologists as evidence that camouflage is influenced by natural selection, as well as demonstrating that it changes where necessary to resemble the local background.
Wiki
If the corresponding feature in the database has been changed by another user, Artemis will warn that this has occurred and ask whether to continue with the commit process, thus allowing a forced overwrite of previous changes, where necessary.
Science
Expert writing Tips
Best practice
When using "change where necessary", ensure the context clearly defines the criteria for determining what is 'necessary'. This avoids ambiguity and ensures effective modification.
Common error
Avoid using "change where necessary" as a blanket statement without specifying what needs to be changed or the criteria for identifying the necessity. This can lead to confusion and inaction. Instead, provide clear guidelines or examples.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "change where necessary" functions as an adverbial clause modifying a verb. As indicated by Ludwig, it specifies the condition under which a change or modification should be made. This means adjustments are conditional and should only occur when certain criteria are met.
Frequent in
News & Media
30%
Science
30%
Wiki
20%
Less common in
Formal & Business
10%
Reference
5%
Encyclopedias
5%
Ludwig's WRAP-UP
The phrase "change where necessary" is a grammatically sound and commonly used expression that provides conditional guidance, as affirmed by Ludwig. It functions as an adverbial clause, specifying that modifications should only be made when essential. While versatile enough for various contexts, including news, science, and general instructions, it is crucial to provide sufficient clarity to avoid ambiguity. Alternatives like "adjust as needed" or "revise where appropriate" can be used for slight variations in tone or emphasis. Remember to be specific and set clear criteria when using this phrase.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
modify when required
Replaces "change" with "modify" and "necessary" with "required", keeping the core meaning intact.
adjust as needed
Uses "adjust" instead of "change" and "needed" instead of "necessary", resulting in a slightly more concise version.
revise where appropriate
Substitutes "change" with "revise" and "necessary" with "appropriate", suggesting a focus on refinement.
amend when essential
Replaces "change" with "amend" and "necessary" with "essential", emphasizing the importance of the modification.
correct where applicable
Focuses on fixing errors by using "correct" instead of "change" and "applicable" instead of "necessary".
alter when indispensable
Uses a stronger word like "indispensable" in place of "necessary" while using the word "alter" for "change".
adapt where crucial
Suggests adapting something only when extremely important by using the word "crucial".
make alterations as necessary
Rephrases the original structure to place "make alterations" at the beginning, offering a more formal tone.
implement changes when needed
Switches the verb to "implement" and the adjective to "needed", suggesting action and requirement.
make adjustments as required
Uses "adjustments" for "changes" and "required" for "necessary", presenting a formal alternative.
FAQs
How can I use "change where necessary" in a sentence?
You can use "change where necessary" to indicate that modifications should be made only when required. For example, "Please review the document and change where necessary to ensure accuracy".
What is a formal alternative to "change where necessary"?
A more formal alternative is "revise where appropriate", which suggests a careful and considered approach to making alterations.
Is it better to say "change where necessary" or "make changes where necessary"?
Both "change where necessary" and "make changes where necessary" are grammatically correct. The choice depends on the desired emphasis; the latter explicitly mentions "changes", while the former is more concise.
What's the difference between "change where necessary" and "change where appropriate"?
"Change where necessary" implies that changes are only made when essential or required, whereas "change where appropriate" suggests changes should be made when suitable or fitting to the context.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested