diff --git a/FAQ.md b/FAQ.md
index c77de17..34cb3ed 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -5,6 +5,10 @@ When running `hackrf_info` or any other command which tries to communicate with
 ```
 hackrf_open() failed: HACKRF_ERROR_NOT_FOUND (-5)
 ```
+or:
+```
+hackrf_open() failed: HACKRF_ERROR_LIBUSB (-1000)
+```
 
 ### Using the latest version
 First make sure that you are running the latest version of libhackrf and hackrf-tools. HackRF One, for example, is only supported by release 2014.04.1 or newer.  Then check to see if `hackrf_info` is successful when running as root.  If it is, then your other user is lacking permission.