diff --git a/src/hal/ttgov1.h b/src/hal/ttgov1.h
index 25f56d3f..176d0b19 100644
--- a/src/hal/ttgov1.h
+++ b/src/hal/ttgov1.h
@@ -17,8 +17,8 @@
 #define HAS_BUTTON KEY_BUILTIN
 
 // Pins for I2C interface of OLED Display
-#define MY_OLED_SDA (15)
-#define MY_OLED_SCL (4)
+#define MY_OLED_SDA (4)
+#define MY_OLED_SCL (15)
 #define MY_OLED_RST (16)
 
 // Pins for LORA chip SPI interface come from board file, we need some