diff --git a/doc/configuration.md b/doc/configuration.md
index ff3fe80..3fb09aa 100644
--- a/doc/configuration.md
+++ b/doc/configuration.md
@@ -7,8 +7,8 @@ Rayhunter can be configured through web user interface or by editing `/data/rayh
 Through web UI you can set:
 - **Device UI Level**, which defines what Rayhunter shows on device's built-in screen. *Device UI Level* could be:
   - *Invisible mode*: Rayhunter does not show anything on the built-in screen
-  - *Subtle mode (colored line)*: Rayhunter shows green line if there are no warnings, red line if there are warnings (warnings could be checked through web UI) and white line if Rayhunter is not recording
-  - *Demo mode (orca gif)*, which shows image of orca fish *and* colored line
+  - *Subtle mode (colored line)*: Rayhunter shows green line if there are no warnings, red line if there are warnings (warnings could be checked through web UI) and white line if Rayhunter is not recording.
+  - *Demo mode (orca gif)*, which shows image of orcas *and* colored line.
   - *EFF logo*, which shows EFF logo and *and* colored line.
 - **Device Input Mode**, which defines behaviour of built-in power button of the device. *Device Input Mode* could be:
   - *Disable button control*: built-in power button of the device is not used by Rayhunter;