diff --git a/src/machine/board_wioterminal.go b/src/machine/board_wioterminal.go
index c0f13ef0..8132d2ca 100644
--- a/src/machine/board_wioterminal.go
+++ b/src/machine/board_wioterminal.go
@@ -355,20 +355,20 @@ var (
 
 // I2C pins
 const (
-	SDA0_PIN = PIN_WIRE_SDA // SDA: SERCOM3/PAD[0]
-	SCL0_PIN = PIN_WIRE_SCL // SCL: SERCOM3/PAD[1]
+	SDA1_PIN = PA17 // SDA: SERCOM3/PAD[0]
+	SCL1_PIN = PA16 // SCL: SERCOM3/PAD[1]
 
-	SDA1_PIN = PIN_WIRE1_SDA // SDA: SERCOM4/PAD[0]
-	SCL1_PIN = PIN_WIRE1_SCL // SCL: SERCOM4/PAD[1]
+	SDA0_PIN = PA13 // SDA: SERCOM4/PAD[0]
+	SCL0_PIN = PA12 // SCL: SERCOM4/PAD[1]
 
-	SDA_PIN = SDA0_PIN
-	SCL_PIN = SCL0_PIN
+	SDA_PIN = SDA1_PIN
+	SCL_PIN = SCL1_PIN
 )
 
 // I2C on the Wio Terminal
 var (
 	I2C0 = sercomI2CM4
-	I2C1 = sercomI2CM4
+	I2C1 = sercomI2CM3
 )
 
 // SPI pins