diff --git a/4_device_security_checklist.md b/4_device_security_checklist.md
index 6f1b808d152bc75b9e2aacd38df9ac5635e65cd9..67384e7bbec2f319783df7daf2204e5ea39c0bc7 100644
--- a/4_device_security_checklist.md
+++ b/4_device_security_checklist.md
@@ -77,4 +77,4 @@ Ad blocking software will keep advertisements from loading on your web browser o
 
 :heavy_check_mark:     **Use either a charge-only cable or a "USB condom" to charge your device from anything other than a wall charger or a computer that you know to be free of infection. Carry a backup battery to ensure you never have to charge your device from an untrusted source.**
 :rocket::wrench::wrench::fire::fire::fire:
-*Almost all modern professionals have been there: your mobile phone or tablet is dead and the only place to charge it a friend's laptop, an internet connected device, or a public computer. Unfortunately that computer or device can become a route for a virus or other malicious software to infect your device. For use in these situations, you can purchase a "USB condom" (which prevents a connection between the data pins in the unknown port and the USB cable and allows only the power pins to connect) or charge-only USB cable (which does not contain the wires that are used for data transfer in the first place). Either option will enable you to safely connect your device to any USB port you come across. Another option, which has the added advantage of being useful even if you can't find a random port, is to purchase and carry a USB-enabled backup battery so you can always charge your device on the go. Although it has been shown to be possible, there have been no reports of backup batteries spreading malware. However if charging from a suspicious charger or one from a stranger,you may wish again to use a USB condom to ensure that any software on the charger cannot affect your device.*
+*Almost all modern professionals have been there: your mobile phone or tablet is dead and the only place to charge it a friend's laptop, an internet connected device, or a public computer. Unfortunately that computer or device can become a route for a virus or other malicious software to infect your device. For use in these situations, you can purchase a "USB condom" (which prevents a connection between the data pins in the unknown port and the USB cable and allows only the power pins to connect) or charge-only USB cable (which does not contain the wires that are used for data transfer in the first place). Either option will enable you to safely connect your device to any USB port you come across. Another option, which has the added advantage of being useful even if you can't find a random port, is to purchase and carry a USB-enabled backup battery so you can always charge your device on the go. Although it has been shown to be possible, there have been no reports of backup batteries spreading malware. However if charging from a suspicious charger or one from a stranger,you may wish again to use a USB condom or charge only cable to ensure that any software on the battery cannot affect your device.*