Common Pull Request Mistakes That Delay Approval

Why PR Mistakes Slow Everything Down

A pull request is supposed to make collaboration easier. But when a PR is unclear, too large, or poorly prepared, it can turn a simple review into a lengthy process.

Here are the most common mistakes that slow down approval — and what to do instead.

1. Making the Pull Request Too Large

Large PRs are difficult to review because there are too many changes to understand at once.

For example, changing a login system, redesigning a dashboard, and updating the database in one PR makes it difficult for reviewers to identify what changed and why.

Better Approach

• Break large changes into smaller, focused pull requests whenever possible.
• Ship related changes together, but keep unrelated work in separate PRs.
• If a PR touches multiple systems, ask whether it could be split along those boundaries.

2. Writing a Poor Description

A reviewer shouldn't have to guess what a PR is supposed to accomplish.

What Doesn't Work

"Updated login."

What Works Instead

"Updated the login flow to support email verification and improved handling of invalid credentials."

A clear description gives reviewers context before they even look at the code.

3. Ignoring Existing Review Feedback

Sometimes developers fix one issue but overlook related comments from previous reviews.

Why It Matters

• Unaddressed comments lead to repeated feedback and unnecessary review cycles.
• Reviewers lose confidence in the PR when earlier notes seem to have been skipped.
• Developers should go through every comment, make the necessary changes, and respond when something requires clarification.

4. Including Unrelated Changes

A PR should have a clear purpose.

If a developer is fixing a payment bug but also changes button styles, renames unrelated variables, and reformats several files, the reviewer has more work to do just to figure out what actually matters.

Focus On

• Scope discipline: one PR, one purpose.
• Separating cleanup from fixes: formatting and renaming can go in their own PR.
• Faster reviews: focused changes mean less time spent untangling what's relevant.

5. Not Checking the Code Before Requesting Review

Developers should run relevant tests, linters, and checks before submitting their PR.

For example, discovering that a simple syntax error breaks the build after requesting review wastes both the developer's and reviewer's time.

Make Reviews Easier

A good pull request answers three simple questions:

• What changed?
• Why was it changed?
• How was it tested?

When developers provide that information and keep their changes focused, reviewers can understand the work faster and approval becomes much smoother.

AI-powered review tools can add another layer of support by identifying potential issues before a PR reaches a human reviewer.

Putting It All Together

1. Keep PRs small and focused — reviewers can only move as fast as the scope allows.
2. Write descriptions that answer what, why, and how — context saves reviewers from guesswork.
3. Close the loop on feedback — address every comment instead of leaving gaps for the next cycle.
4. Separate unrelated changes — one PR should have one clear purpose.
5. Check your own work first — tests and linters catch what a reviewer shouldn't have to.

A better-prepared PR means fewer review cycles, faster feedback, and a more efficient development workflow.