diff --git a/user/troubleshooting/installation-troubleshooting.md b/user/troubleshooting/installation-troubleshooting.md
index 636d7bf0..867fd7f3 100644
--- a/user/troubleshooting/installation-troubleshooting.md
+++ b/user/troubleshooting/installation-troubleshooting.md
@@ -81,7 +81,7 @@ For more information, look at the [Nvidia Troubleshooting guide](https://github.
  
 If you are facing this problem on an Apple computer, check out the [Macbook Troubleshooting guide](https://github.com/Qubes-Community/Contents/blob/master/docs/troubleshooting/macbook-troubleshooting.md).
 
-If you are installing Qubes 4.0 on an external storage device, you may have forgotten do disable `sys-usb` during the [initial setup](/doc/installation-guide/#initial-setup), which is generally required for that setup to work.
+If you are installing Qubes 4.0 on an external storage device, you may have forgotten to disable `sys-usb` during the [initial setup](/doc/installation-guide/#initial-setup), which is generally required for that setup to work.
 
 This issue occurs due to the network card, which may be missing some drivers or is incompatible with Qubes.