diff --git a/README.md b/README.md
index 89dc1a7..67ef2b7 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # Han Mqtt Adapter
-Han port pinout (RJ11):
+Han port pinout (RJ12):
 1. 5V
 2. Data request (connect to 5V to enable)
 3. GND