diff --git a/Shelly-1PM.md b/Shelly-1PM.md
index a0b4a3bd..e78d3b71 100644
--- a/Shelly-1PM.md
+++ b/Shelly-1PM.md
@@ -16,7 +16,7 @@ The GND connection of the Shelly is connected to the live AC wire. Connecting se
 An ESP8266 with 2MB flash single relay device 42mm "round" in size.
 
 ## Serial Flashing
-Shelly 1PM comes with a partially exposed programming/debug header which can be used to flash Tasmota on the device. A USB-to-UART adapter is needed as well as a reliable 3.3V with at least 350 mA drive capability. The following diagram shows the device pinout and power source voltage selection jumper.
+Shelly 1PM comes with a partially exposed programming/debug header which can be used to flash Tasmota on the device. A USB-to-UART adapter is needed as well as a reliable 3.3V with at least 350 mA drive capability. The following diagram shows the device pinout.
 
 <img src="https://github.com/arendst/arendst.github.io/blob/master/media/shelly/shelly1pm-pinout-812x400.png" height="250" />