diff --git a/src/main/target/BLUEJAYF4/target.h b/src/main/target/BLUEJAYF4/target.h
index e1370650a5..b9c52baeaa 100644
--- a/src/main/target/BLUEJAYF4/target.h
+++ b/src/main/target/BLUEJAYF4/target.h
@@ -140,6 +140,8 @@
 #define USE_I2C
 #define USE_I2C_DEVICE_1
 #define I2C_DEVICE              (I2CDEV_1)
+#define I2C1_SCL                PB8
+#define I2C1_SDA                PB9
 #define USE_I2C_PULLUP
 
 #define USE_ADC