diff --git a/OBI-Socket-2.md b/OBI-Socket-2.md
index 3890f0f0..e32553a2 100644
--- a/OBI-Socket-2.md
+++ b/OBI-Socket-2.md
@@ -6,7 +6,7 @@ New cheap socket from German Hardware Store, based on ESP-WROOM-02 with 2MB Flas
 
 ![OBI Socket 2](https://user-images.githubusercontent.com/43306023/49151752-207f3000-f311-11e8-9ad9-d21021e385e3.jpg)
 
-The only way to flashing the moduls you must soldering 3 wires to the RX/TX/GND pins from the ESP. The PCB have no serial pinout connector.For flashing the moduls enable the flashmode of the ESP, connect PIN4 (GPIO00) to GND.
+The only way to flashing the moduls you must soldering 3 wires to the RX/TX/GND pins from the ESP. The PCB have no serial pinout connector. For flashing the moduls enable the flashmode of the ESP, connect GPIO 0 to GND.
   
 
  
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