diff --git a/configs/HGLRCF722MINI/config.h b/configs/HGLRCF722MINI/config.h
index d0f50c8a..baa874fc 100644
--- a/configs/HGLRCF722MINI/config.h
+++ b/configs/HGLRCF722MINI/config.h
@@ -94,6 +94,7 @@
     TIMER_PIN_MAP( 8, PB3,  1,  0)
 
 #define ADC3_DMA_OPT 0
+#define ADC_INSTANCE ADC3
 
 #define MSP_UART SERIAL_PORT_UART5
 #define MAG_I2C_INSTANCE (I2CDEV_1)