diff --git a/Button-usage.md b/Button-usage.md
index eed10aaf..75ab191b 100644
--- a/Button-usage.md
+++ b/Button-usage.md
@@ -23,7 +23,7 @@ Restarts the device.
 ### 7 short presses
 Start OTA update of firmware using [OtaUrl](commands#otaurl). The green LED is lit during the update.
 
-### **Pressing the button for over 40 seconds** 
+### **Pressing the button for over 4 seconds** 
 Resets the device to  firmware defaults and restarts it. 
 >:warning: When a button is configured with a [Switchmode](commands#switchmode) that keeps it as ON while depressed it activates this function.