> Source: [sk171318](https://support.checkpoint.com/results/sk/sk171318)

# sk171318 - "Channel width" is blank on SMB 1500 Appliances 

| Property | Value |
|----------|-------|
| Solution ID | sk171318 |
| Date Created | 2021-01-06 |
| Last Modified | 2022-07-13 |
| Technical Level | General |
| Products | Spark Firewall (Locally Managed) |
| Versions | R81.10.X |
| Platform | 1570R, 1500, 1600, 1800 |

## Symptoms

- On 1500 Branch Office Appliances running R80.20.15 Build 992001682: After the user changes the Wifi Radio Settings, selects **Automatic (20/40 MHz)** , and clicks **apply** , the **Channel Width** is blank when it should show **Automatic (20/40 MHz)** .

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## Cause

The function **setChannelWidthAllowedValuesListStore** was called twice.

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## Solution

**This problem was fixed. The fix is included in:**

* [**R80.20.15 (Build 992001705)**](https://supportcenter.us.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk168333)

**Check Point recommends to always upgrade to the most recent version ([1500](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=overview&product=512) / [1570R](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doShowproductpage&productTab=overview&product=515)).**   

You can also [Contact Check Point Support](https://www.checkpoint.com/support-services/contact-support/) to get a Hotfix for this issue.   
A Support Engineer will make sure the Hotfix is compatible with your environment before providing the Hotfix.   
For faster resolution and verification please collect [CPinfo](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk92739) files from the Security Management and Security Gateways involved in the case.

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