ErrorCodeDoctor
Brother · Printer (Laser)

Brother Printer (Laser) Size Mismatch / Size mismatch error code

Difficulty: Easy · Cost: $0 · Duration: 2m

The Size Mismatch message on your Brother laser printer means the paper currently loaded in the tray is not the correct size for the current print job. Load the correct paper size in the tray and set the paper size setting on the machine to match.

Common causes

  • The paper loaded in the tray is a different size from the paper size set on the machine or in the print job

How to fix it

  1. 1

    Remove the paper from the tray

  2. 2

    Load the correct paper size for the print job

  3. 3

    Adjust the paper guides to the correct size

  4. 4

    Set the paper size on the machine to match the paper loaded

  5. 5

    Try printing again

Related Brother Printer (Laser) error codes

1

2-sided Disabled / 2-sided Disable

The back cover or 2-sided tray is not properly closed or installed

easy
2

Access Denied

The function you are trying to use is restricted by Secure Function Lock

medium
3

Cartridge Error / Put the Toner Cartridge back in

The toner cartridge is not installed correctly in the drum unit

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4

Comm. Error

A poor telephone line caused a fax communication error

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Size Mismatch / Size mismatch error — frequently asked questions

What does the Size Mismatch / Size mismatch error mean on a Brother printer (laser)?

The paper loaded in the tray does not match the paper size setting

What causes the Size Mismatch / Size mismatch error?

The Size Mismatch / Size mismatch error is usually caused by: The paper loaded in the tray is a different size from the paper size set on the machine or in the print job.

Can I fix the Size Mismatch / Size mismatch error myself?

Yes — this is rated an easy fix that most people can do themselves, typically in 2m.

How much does it cost to fix the Size Mismatch / Size mismatch error?

Fixing the Size Mismatch / Size mismatch error on a Brother printer (laser) typically costs $0, depending on parts and whether you do it yourself or hire a technician.

Is it safe to keep using my printer (laser) with the Size Mismatch / Size mismatch error?

In most cases yes, but it's best to address the Size Mismatch / Size mismatch error soon — see the fix steps below to resolve it.